NDLI: Enol elimination reactions. Part IV. Some improvements to the synthesis of conjugated acetylenic acids

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Journal of the Chemical Society C: Organic Vol -0

Synthesis and absorption spectra of 4,5-disubstituted pyridine-2,6-(1H,5H)-diones

The reaction of phenyl radicals with anthracene

Reactions of group V organometalloidal compounds. Part VI. Ring opening of β-propiolactone and of epoxides with dialkylamino(dimethyl)-arsines

Reactions of chlorocyclopentadienes with prop-2-ynyl bromide and bromoallene

Oxidative dimerisations of natural rethrolones and related compounds with manganese dioxide

High resolution mass spectrometry. Part VIII. The fragmentation of ring A in some 3-oxo-steroids

High resolution mass spectrometry. Part IX. 2-Spiro-2′-(1′,3′-dithian) derivatives of 3-oxo-steroids

Applications of high-potential quinones. Part IV. The mechanism of oxidation of 6-hydroxytetralins

Dalpanol, a new 6′-hydroxyrotenoid from a Dalbergia species

Dehydrogenation with mercuric acetate in the lupane series. Part IV. Acidic products of the reaction

Naturally occurring compounds related to phenalenone. Part I. The synthesis of lachnanthocarpone

A convenient preparation of indenone

Factors which affect the stability of aluminium hydride solutions

Amino-acids and peptides. Part XXXII. A simplified synthesis of bradykinin by use of the picolyl ester method

Amino-acids and peptides. Part XXXIII. Synthesis of Val⁵-angiotensin-II by the picolyl ester method

Preparation of 4a-alkoxy-1,2,3,4,4a,9b-hexahydro- and -1,2,3,4-tetra-hydro-benzofuro[3,2-c]pyridines

Polyfluoroheterocyclic compounds. Part XVIII. Reactions of heptafluoro-quinoline and -isoquinoline and pentafluoropyridine with hydrogen halides

Organometallic reactions. Part XIX. Some reactions of aldehydes with aminotin compounds

Reaction of 1-amino-8-hydroxynaphthalene-3,6-disulphonic acid and its N-acyl and N-s-triazinyl derivatives with cyanuric chloride and 6-substituted 2,4-dichloro-s-triazines. Formation of O-s-triazinyl derivatives and peri-O-→ N-s-triazinyl rearrangements

Mechanism of pyrazoline formation from the reactions of substituted hydrazines and Mannich bases

Isoxazolin-5-one

Valence-bond isomer chemistry. Part II. Diels–Alder reactions of hexafluorobicyclo[2,2,0]hexa-2,5-diene : pyrrole as a diene

Curvularin. Part VII. Some acylations of 3,5-dihydroxytoluene and its dimethyl ether

Derivatives of 2-amino-2-deoxy-D-gulose: synthetic and conformational studies

Thiazolinium salts and their reactions with nucleophiles

Biosynthesis of terpenes and steroids. Part III. Squalene cyclisation in the biosynthesis of triterpenoids; the biosynthesis of fern-9-ene in Polypodium vulgare Linn

Internuclear cyclisation. Part XXVI. Photolysis of 2-iodo-N-methylbenzanilide in benzene

Schotten–Baumann benzoylation of 2,4,4-trimethyl-1-pyrroline-1-oxide: a re-investigation

Synthesis of 6,8-disubstituted purines

Vilsmeier reaction on 6-methylpurine

Phenothiazynes: preparation of 2- and 3-tertiary aminophenothiazines

The chemistry of ortho-benzoquinones. Part IV. Addition of primary aromatic amines to 1,2-benzoquinone

A stilbene amino-acid derivative as a thyroxine analogue

Substituted stilbenes as potential chemotherapeutic agents

3,4-Dihydro-4-oxo-2H-1,3-benzoxazine-carboxylic acids

Chemistry of the solanidane ring system

Naturally occurring quinones. Part XVIII. New spinochromes from Diadema antillarum, Spatangus purpureus, and Temnopleurus toreumaticus

Reactions of organic peroxides. Part XVI. Amino-peroxides from autoxidation of imines

Polyhalogeno-aromatic compounds. Part XVI. The preparation and reactions of polyhalogenophenyl- and polyhalogenopyridyl-hydrazines

Synthetic uses of polyphosphoric acid. Part III. A ready synthesis of aromatic aldazines and ketazines

Synthesis of indole-2-carbaldehydes, 2-(2-aminoethyl)- and 2-(2-aminopropyl)-indoles

Condensed thiophen ring systems. Part V. Synthesis, reactions, and stability of 2-methyl- and 2-methylthio-3-benzo[b]thienyl-lithium and related compounds.

Reaction of copper(I) acetylides with halogeno-acetylenes

Studies on lactams. Part XIII. A position isomer of a penam (4-thia-1-aza-bicyclo[3,2,0]heptane)

A total synthesis of (±)-O-methyl-14-methylpodocarpic acid

The chemistry of cyano-acetylenes. Part VIII. Claisen, amino-Claisen, and thio-Claisen rearrangements in the reactions of cyano-acetylenes with allyl alcohol, prop-2-ynol, allyl amines, and prop-2-enethiol

The stereochemistry of organometallic compounds. Part IX. Sodium borohydride reduction of oxymercury compounds

Lythraceous alkaloids. Part III. Synthesis of the product of dehydrogenation of dideoxy-NO-dimethyl-lythranidine; the structure of lythranidine

Condensation of aromatic aldehydes with ethoxycarbonylacetohydrazide and cyanoacetohydrazide

Organophosphorus intermediates. Part III. The base-catalysed addition of methyl phenylphosphinate, dimethyl phosphonate, and diphenylphosphine oxide to tetraphenylcyclopentadienone

4-Hydroxy-6-methylchromen-2-thione, and a sulphur analogue of dicoumarol

Diazo-ketones with potential tumour-inhibitory properties derived from L-aspartic and L-glutamic acids

Formation of pyrazoles from 1,3,4-oxadiazolium salts

Potentially carcinogenic cyclopenta[a]phenanthrenes. Part V. Synthesis of 15,16-dihydro-7-methylcyclopenta[a]phenanthren-17-one

The ‘trimer’ and ‘pentamer’ from the polymerisation of thiophen by polyphosphoric acid

Quinazolines. Part XV. Hexahydro- and octahydro-quinazolines

The conversion of gibberellin A₁₃ into some δ-lactones related to gibberellin A₁₅

The Dimroth rearrangement. Part XIII. The small effect of p-substitution on rearrangement rates for 1,2-dihydro-2-imino-1-methyl-5-phenylpyrimidines

Studies of the reactions of anhydrosulphites of α-hydroxycarboxylic acids. Part VI. Anhydrosulphite synthesis and characterisation

Azasteroids. Part VII. Synthesis of 7-hydroxy-2-methoxy-7,8,9,10-tetrahydrobenzo[i]phenanthridine

Azasteroids. Part VIII. Synthesis and stereochemistry of (±)-13-aza-18-norequilenin

Azasteroids. Part IX. Synthesis of (±)-13-aza-15-thia-18-norequilenin and a study of Bischler–Napieralski cyclisation of N-acyl-2-(1-naphthyl)ethylamines

Diels–Alder reaction of unsymmetrical dienes with unsymmetrical p-benzoquinones

Diels–Alder reaction of unsymmetrical dienes with methyl acrylate

Preparation of some halogeno-acetones including 1-bromo-1-chloro-1-fluoroacetone

Electrochemical reactions of fluoro-compounds. Part II. The preparation of substituted fluoro-aromatic derivatives

Free-radical reactions of halogenated bridged polycyclic compounds. Part XI. Application of the Cristol–Firth reaction to some carboxylic acids containing a chloronorbornene ring system

Free-radical reactions of halogenated bridged polycyclic compounds. Part XII. The formation of 1,2,3,5,5,6,6-heptachloronorborn-2-ene in the attempted chlorocarbonylation of 1,2,3,4,7,7-hexachloronorborn-2-ene

Acid-catalysed cleavage of the cyclopropane ring in some ketones of the carane series

Studies of organophosphorochloridates. Part I. Synthesis of N-substituted phosphoramidic chlorides and acids

A novel bismethylene transfer to 2′-hydroxylated isoflavones by dimethylsulphoxonium methylide: study of the reaction and its products

The conversion of labdadienols into pimara- and rosa-dienes

A synthesis of rosenonolactone and deoxyrosenonolactone

Steric effects of methoxy-groups in some biphenyls derived from thebaine. Part I. Unbridged biphenyls

Synthesis and some reactions of 3-substituted 10bH-oxazolo[3,2-c][1,3]benzoxazine-2(3H),5-diones

The biosynthesis of annuloline, a unique oxazole alkaloid

Reactions of phosphine sulphides with aryl-lithiums

Selective esterification, substitutions (S_N1), and transformations of flavan-3,3′,4,4′,7-pentaols

Reactions of phosphorus compounds. Part XXIII. Preparation and reactions of several α-substituted vinylphosphonium salts

Highly fluorinated heterocycles. Part IV. The fluorination of tetrachlorothiophen, thiophen, and tetrahydrothiophen over cobaltic and manganic trifluorides and over potassium tetrafluorocobaltate(III)

Highly fluorinated heterocycles. Part V. The preparation and some reactions of tetrafluorothiophen and some polyfluorothiophens

Highly fluorinated heterocycles. Part VI. Fluorination and rearrangement of 1,4-dithian

Studies in the indole series. Part VI. Tetrahydropyrimido[3,4-a]indoles and isotryptamines

Carbene chemistry. Part II. Migration in fluoroalkylcarbenes

Heterocyclic studies. Part XIV. Novel tri- and tetra-cyclic compounds derived from a pteridine derivative by nucleophilic addition reactions

Heterocyclic studies. Part XV. Synthesis and covalent hydration of pteridine-4-carboxylic acid, -4-carboxamide, and -4-carbonitrile

Reactions of steroid A-ring lactones with Grignard reagents

Allene cycloadditions. Part I. Reaction of tetrafluoroethylene with allenic hydrocarbons

Allene cycloadditions. Part II. Reaction of a dialkylallene with unsymmetrical fluoro-olefins: evidence for a two-step [2 + 2] cycloaddition

Further observations on the addition of tetrahalogeno-1,2-benzoquinone to cyclopentadienones

Photolysis of some cyclopentadioxinones

Carotenoids and related compounds. Part XXVIII. Synthesis of zeaxanthin, β-cryptoxanthin, and zeinoxanthin (α-cryptoxanthin)

The action of amines on 1,3,4-oxadiazolium salts

D-homo-steroids. Part III. The preparation of D-homoandrostane derivatives: a study of the reactions of steroidal C(17)-spiro-oxirans and their derivatives

Simple pyrimidines. Part XII. Synthesis and methylation of some 2-amino-5-phenylpyrimidines

Thiophen derivatives. Part XX. Further studies on the Elbs reaction of aroylbenzo[b]thiophens

Heterocyclic rearrangements. Part V. Transformations of 3,5-diacetyl-4-chloromethyl-1,4-dihydro-2,6-dimethylpyridine

Thermodynamically controlled enol acetylation of Δ⁴-3-oxo-steroids

Structures of the sulphones formed in the oxidation of the products of thiol addition to chloronorbornadienes and related compounds

Quinoxalines and related compounds. Part VIII. The reactions of quinoxaline-2(1H)-ones and -2,3(1H,4H)-diones with hydrazine

Action of base on non-enolisable carbonyl compounds. Part I. Cleavage of benzophenones and some related ketones

Biosynthesis of phenols. Part XXII. Synthesis of 3-isopentyl-2,6-dimethoxyphenyl-(3,6-dimethoxy-2,4-dimethylphenyl)methane, a degradation product of arugosin

Thieno[2,3-b][1]benzothiophen and thieno[3,2-b][1]benzothiophen. Part II. Substitution reactions

New synthesis of hexacene

Reactions of 1,5-disubstituted naphthalenes with phthalic anhydride

Pyrroles and related compounds. Part XV. Differential protection of pyrrole rings during porphyrin synthesis. Syntheses of mesoporphyrin-XI

Pyrroles and related compounds. Part XVI. Synthesis of protoporphyrin-IX by the a- and b-oxobilane routes

Pyrroles and related compounds. Part XVII. Porphyrin synthesis through b-bilenes

Synthesis of hydroxyhydrolapachol and lapachol

Reactions of tris(dimethylamino)stibine with organic compounds

Amino-acids and peptides. Part X. Characterisation of the monamycins, members of a new family of cyclodepsipeptide antibiotics

Amino-acids and peptides. Part XI. (3R,5S)-5-chloropiperazic acid and (3S,5S)-5-hydroxypiperazic acid, products of hydrolysis of monamycin

Amino-acids and peptides. Part XII. The molecular structures of the monamycins, cyclodepsipeptide antibiotics

Reactions involving fluoride ion. Part III. Preparation, rearrangement, and hydrolysis of perfluoroisopropylpyridazines

Formation of nickel tetradehydrocorrin derivatives and the reduction of nickel 1,19-dimethyltetrahydrocorrin salts

Applications of high-potential quinones. Part V. Ring B oxidation in the podocarpic acid series

Unsaturated carbohydrates. Part XIV. The isomerisation of hex-2-enopyranosylpurine nucleoside derivatives

Unsaturated carbohydrates. Part XV. The synthesis of (3′-deoxyhex-2′-enopyranosyl)purine derivatives

Polyfluoroarenes. Part XV. Diazo-oxides and related compounds

Aryne chemistry. Part XXVIII. Some further cycloaddition reactions of tetrahalogenobenzynes generated from tetrahalogenoanthranilic acids

Steroids. Part XII. Westphalen-type rearrangements of 5α-hydroxy-4α-methyl- and 5α-hydroxy-4β-methyl-steroids

Steroids. Part XIII. Boron trifluoride-catalysed rearrangement of 3β-acetoxy-5,6α-epoxy-19-methyl-5α-cholestane

Propyl homologue of tetrahydrocannabinol: its isolation from Cannabis, properties, and synthesis

An improvement of the Chugaev reaction with tertiary alcohols

Oximate anion as a powerful neighbouring group towards saturated carbon

Studies on the syntheses of heterocyclic compounds. Part CCCLXXXI. A novel conversion of galanthamine into nivalidine under non-acidic conditions

Organophosphorus intermediates. Part IV. Formation of phenylphosphinidene in the decomposition of phenylphosphinic anhydride: mechanism for the thermal decomposition of monosubstituted phosphinic acids

Action of oxazol-5(4H)-ones and of 4,5-dihydro-5-oxo-oxazolium perchlorates on enamines

Polycyclic fluoroaromatic compounds. Part V. Some reactions of 1,2,3,4-tetrafluoronaphthalene

o-Quinonoid compounds. Part IV. 1,3-Diphenylinden-2-one

Syntheses of 6-deoxy-3-O-methyl-D-gulose and 6-deoxy-3-O-methyl-L-mannose(L-acofriose)

Substituent interactions in slow-inverting aziridines

Biogenesis of xanthones in Gentiana lutea

Two new gibberellins, A₂₄ and A₂₅, from Gibberella fujikuroi; their isolation, structure, and correlation with gibberellins A₁₃ and A₁₅

Reduction by dissolving metals. Part XVI. Reactions of some aromatic amines with metal–ammonia solutions

Polyhalogenoaromatic compounds. Part XVII. Synthesis of arylpentachlorophenyl ketone imines and 2,4-diaryl-5,6,7,8-tetrachloroquinazolines by the reaction of pentachlorophenyl-lithium with nitriles

Steroid conjugates. Part III. Syntheses of 19-oxygenated dehydro-epi-androsterone sulphates

Nuclear benzoylation of phenol

Alkaloids of Erythrina iysistemon. 11-Methoxyerythraline, a new alkaloid

Proximity effects in diaryl derivatives. Part VI. Base-catalysed rearrangement of 2-(hydroxyamino)aryl aryl sulphones to 2-hydroxy-2′-(arylsulphonyl)azoxybenzenes

Stobbe condensation with dimethyl glutarate. Syntheses of some polycyclic compounds

Allenes. Part XXI. The preparation of 1,1-dialkyl-3-iodoallenes and 1,1-dihalogenoallenes

Synthesis of bicyclo[3,3,1]nona-3,7-diene-2,6-diones and bicyclo[3,3,1]-nona-3,6-diene-2,8-diones

Heterocyclic studies. Part XVI. Imidazo- and di-imidazo-pyrimidines

Heterocyclic studies. Part XVII. Some 2,3-dihydroimidazo-[1,2-a]- and [1,2-c]-pyrimidines

Electrochemical reactions. Part IX. Reduction of 2-acetylnaphthalene. Stereochemistry of the isomeric 2,3-di-(2-naphthyl)butane-2,3-diols

Extractives from sporophores of some Fomes species

Sesquiterpenoids. Part XXXVII. Absolute configuration and conformation of zederone, a sesquiterpenoid of Curcuma zedoaria

Addition reactions of heterocyclic compounds. Part XLIII. Rotational isomerism of 5-oxidovinylphenanthridiniums: an investigation by variable temperature nuclear magnetic resonance spectroscopy

Spin traps. A cautionary note

Preparation and spectra of aminotetrazoles benzylated in the nucleus or in the side-chain

The chemistry of polyazaheterocyclic compounds. Part IV. Dimroth rearrangements of 4-substituted 5-amino-1-phenyl-1,2,3-triazoles and a synthesis of v-triazolo[4,5-d]pyrimidines

Photoreduction of acetone by toluene and ethylbenzene

1-Phenylnaphthalenes. Part VIII. Reactions of hydrazine and its derivatives with some five-membered ring anhydrides

Photochemical transformations. Part XXVIII. Aryl azides as potential photosensitive protecting groups

Photochemical transformations. Part XXIX. Steric compression effects in the synthesis and reactions of 4-amino-5-methylphenanthrene

Preparation of 2-acyl- and 2-alkoxycarbonyl-octahydroindolo[2,3-a]quinolizines

Dienyl complexes of transition metals. Part V. Preparation and reactions of tricarbonyl(cycloheptatriene)manganese tetrafluoroborate and related compounds

Synthesis of 1H-benzo[de]cinnolines (1H-1,2-diazaphenalenes)

The synthesis and properties of bradykinin analogues: 1-deamino-, 9-decarboxy-, and 1-deamino-9-decarboxy-bradykinin

Reaction of methyl vinyl ketone with 1-pyrrolidin-1-ylisobutene

Sesquiterpenes. Part IV. Synthesis of some tricyclo[5,4,0,0^3,5]undecanones and related compounds

Thermal rearrangement of v-triazolo[1,5-a]pyridine-3-acraldehydes into 3-methyl-5-(2-pyridyl)pyrazoles

Synthesis and proton magnetic resonance spectra of substituted biphenyls

Gamboge. Part V. Synthesis of 2′-isopropyl-5′-methylbiphenyl-2,4,6-triol

Fluorination of perchloro-2,5-dihydrofuran

Synthesis of 5-acetamido-2-acetylpiperidine

Isothiazoles. Part XIII. Isothiazole sulphides and sulphones

Pyridopyrimidines. Part VII. Reductive ring cleavage of pyrido[3,4-d]pyrimidin-4(3H)-ones with lithium aluminium hydride

Photo-oxidation of aryldihydropyrans

Pyridine-catalysed condensation of citral with phloroglucinols, a novel reaction leading to tetracyclic bis-ethers and chromenes. Two-step synthesis of (±)-deoxybruceol

Synthesis of cannabinoids by pyridine-catalysed citral–olivetol condensation: synthesis and structure of cannabicyclol, cannabichromen, (hashish extractives), citrylidene-cannabis, and related compounds

Pyridine-catalysed chromenylation of mono-chelated meta-dihydric phenols with mono-, sesqui- and di-terpene aldehydes: synthesis of rubranine and flemingins A-, B- and C-methyl ethers

3-Hydroxy-3-methyl-1,1-dimethoxybutane, a new reagent for dimethylchromenylation: synthesis of lonchocarpin, jacareubin, evodionol methyl ether, and other chromens

Purines, pyrimidines, and imidazoles. Part XXXV. Potentiometric and spectroscopic studies of some imidazoles related to intermediates in the biosynthesis de novo of purine nucleotides

Reaction of 2,3-epoxy-3-(2-nitrophenyl)propiophenone(2-nitrochalcone epoxide) with hydrogen chloride

Some oxidation reactions of monochloramine

Stereoselectivity in the addition of hydrogen chloride to cyclohex-1-enecarbonitrile: possible role of chlorine lone pair–nitrile π-orbital pseudoallylic A^{1, 3} interaction

Photochemical reactions of 16-oxo-oleanenes

Optical rotatory dispersion and circular dichroism. Part LXX. The circular dichroism of some less common amino-acids

Mechanisms of hydrogenation. Part VIII. Bis(pyridine)dimethylformamidedichlororhodium borohydride as a catalyst for homogeneous hydrogenation

Mechanisms of hydrogenation. Part IX. Induced asymmetry in homogeneous hydrogenation at a rhodium complex by the use of optically active amide ligands

Synthesis and nuclear magnetic resonance spectra of substituted aminobornanes

Condensations of diketones with aromatic compounds. Part IV. Hexane-2,5-dione and pyrogallol

Some conjugated 3-oxoergostane derivatives

Cyclic quaternary ammonium salts. Part VII. The deoxygenation of pyrido[1,2-a]pyrazinium 2-oxide salts

The synthesis and some properties of 1-(2-amino-oxyethyl)cytosines

Synthesis of methyl 3-methyltridecanoate and 3,6-dimethyltridecanoate

Derivatives of 2,4-dihydroxybenzophenone. Part II

1,3-Dipolar character of six-membered aromatic rings. Part I. 1-Methyl-3-oxidopyridinium

1,3-Dipolar character of six-membered aromatic rings. Part II. A novel route to tropones and tropolones

Unusual behaviour of 2-methyladamantane during bromination

trans-Cycloalkenes. Part I. (1RS,2RS)-trans-Cyclo-oct-2-en-1-ol

trans-Cycloalkenes. Part II. Application of the dioxolan olefin synthesis to the stereospecific formation of trans-cyclo-octene derivatives. (1SR,2RS)-trans-Cyclo-oct-2-en-1-ol

trans-Cycloalkenes. Part III. Stereochemistry and mechanism of some reactions of diastereoisomeric 3-substituted trans-cyclo-octenes

Free-radical reactions of halogenated bridged polycyclic compounds. Part XIII. The addition of hydrogen bromide to hexachloromethylenenorbornene

The preparation of optically active 3-aryl-1,4-dioxaspiro[4,5]decanes and their 2-oxo-derivatives; a study of the cotton effects associated with these compounds

The constitution of the aromatic diterpene cleistanthol

Quinoline alkaloids. Part XI. A study of the Claisen rearrangement of the 3,3-dimethylallyl ether of 4-hydroxy-1-methyl-2-quinolone. Synthesis of ifflaiamine and the identification of a new alkaloid from Flindersia ifflaiana F. Muell

Pharmacologically active benzo[b]thiophen derivatives. Part IX. Some 4- and 5-monosubstituted and 4,5-disubstituted amines and thiouronium salts

New ring systems derived from 4,5-diaminobenzo[b]thiophen and its 3-methyl derivative

The synthesis and biological evaluation of a conformationally flexible oestrogen analogue

Photochemical isomerisation derivatives of decafluorocyclohexene and their reactions

Diels–Alder reactions of polyfluorocyclohexa-1,3-dienes. Part III. Addition of alkynes, ethylene, and allene to 2H,3H-hexafluorocyclohexa-1,3-diene and reaction of some Diels–Alder adducts of octafluorocyclohexa-1,3-diene with lithium aluminium hydride

Oxymetalation. Part I. The peroxymercuration of monosubstituted ethylenes; a synthesis of secondary alkyl peroxides

Chemical reduction of colupulone

The oxidation of 5-arylsulphonamido-3,3-dimethyloxindoles and related compounds

Lichens and fungi. Part VII. Extractives from the lichen Sticta mougeotiana var. dissecta del

The gentamicin antibiotics. Part I. Structure and absolute stereochemistry of methyl garosaminide

6a-Thiathiophthens and related compounds. Part II. Substitution reactions

Synthesis of isoquinolines from benzylaminoacetonitriles. Part I. Compounds prepared from veratrylamine

The reactions of cyclohexa-2,4-dienones with cyclopentadiene

A new method for the preparation of Δ²-isoxazolin-5-ones from the oximes of ketones having an α-hydrogen atom

The autoxidation of 2-(2-hydroxyphenyl)-3-methylindole

Reactive intermediates. Part XII. Attempts to form a benzyne–platinum complex

Reactive intermediates. Part XIII. Benzocyclopropenones as intermediates in the oxidation of 3-aminobenzotriazin-4-ones

Reactive intermediates. Part XIV. Photochemistry of phthalimidoaziridines and related systems

Oxidation, thermolysis, and photolysis of diarylsulphamides

Synthesis of corydalactam

Constituents of the higher fungi. Part X. The chromenols and chromanols of bovinone and a synthesis of hydroxy(methylthio)-quinones

An examination of the euphorbiaceae of Hong Kong. Part VIII. Lup-20(29)-ene-3α,23-diol, a new triterpene from Glochidion macrophyllum benth

Reactivity of mannich bases. Part XIV. Synthesis of phenylbenzoquinoline and styrylbenzoquinoline derivatives and their photoreactivity

The resolution of 1-bromo-1-chloro-1-fluoroacetone and the preparation of (+)- and (–)-bromochlorofluoromethane

Triazoles. Part XII. Structure of 1,2,4-triazolinethiones

Synthesis of a neoatisiranone, the enantiomer of a ketone obtained by the acid-catalysed rearrangement of isophyllocladene epoxide

Studies on the syntheses of heterocyclic compounds. Part CCCLXXXII. Phenolic oxidative coupling of reticuline by use of various reagents

Studies on the syntheses of heterocyclic compounds. Part CCCLXXXIII. A total synthesis of (–)(–)-OO-dimethylcurine

Studies on the syntheses of heterocyclic compounds. Part CCCLXXXIV. The formation of β-hydroxyreticuline by enzymic phenolic oxidation with homogenised Papaver rhoeas and hydrogen peroxide

Studies on the syntheses of heterocyclic compounds. Part CCCLXXXV. Pschorr reactions of 1-(2-aminobenzyl)- and 1-(2-aminophenethyl)-1,2,3,4-tetrahydroisoquinolines (total synthesis of thalicsimidine)

Studies on the syntheses of heterocyclic compounds. Part CCCLXXXVI. Alternative total syntheses of galanthamine and N-benzylgalanthamine iodide

Benzyne reaction. Part X. The benzyne reaction of ortho-substituted halogenobenzenes with cyclohexanone in secondary cyclic amines or in organic solvents

Benzyne reaction. Part XI. Novel syntheses of 2-(3-substituted phenyl)cycloalkanones by the benzyne reaction

Studies on the syntheses of heterocyclic compounds. Part CCCLXXXIX. An alternative synthesis of de-ethyldasycarpidone

Some reactions of quinazoline-2,4(1H,3H)-diones

Reactions of phosphines with acetylenes. Part XII. The mechanisms of 1,2-aryl migrations common to αβ-unsaturated phosphonium salts and “Wittig-type” phosphonium betaines

Reactions of phosphines with acetylenes. Part XIII. Ring expansion of dibenzophosph(III)ole derivatives to give dihydrodibenzophosphorin oxides

An examination of the rubiaceae of Hong Kong. Part VIII. The structure of spinosic acid A, a new triterpenoid sapogenin from Randia spinosa(Thunb.) Poir.

Components of the root of Lindera strychnifolia Vill. Part XVIII. Neosericenyl acetate and dehydrolindestrenolide

The chemistry of terpenes. Part XII. Oxidation of (+)-car-3-ene with t-butyl chromate and photolysis of the major oxidation product, (–)-car-3-en-5-one

Sequential polypeptides. Part I. Use of mono-esters of catechol in the synthesis of sequential polypeptides

Chemical modification of trehalose. Part V. The synthesis of mono- and di-epoxides

Homolytic reactions of perfluoroaromatic compounds. Part IV. Formation of pentafluorophenyl radicals from pentafluoroaniline, and their reactions with aromatic compounds

Friedel–Crafts reactions of n-alkenoic acids and ω-chloroalkanoic acids

Carcinogenic nitrogen compounds. Part LXIX. Synthesis of polycyclic thiazoles from 4,5-dihydro-2-methylbenzothiazol-7(6H)-one

Lignans and related phenols. Part XI. Circular dichroism of apo-compounds of the arylnaphthalene class

Some reactions of arsenic ylides

Dimerisation of propene catalysed by transition-metal compounds and complexes

Linear dimerisation of 1-olefins catalysed by complexes of nickel β-diketonates and aluminium alkyls

Microbiological hydroxylation of steroids. Part II. Structural information and infrared spectrometry: carbonyl, perturbed methylene, and hydroxy-vibrations of steroidal ketones and alcohols

Microbiological hydroxylation of steroids. Part III. A convenient, microbiological route to 15-oxygenated 5α-androstanes.

Thermolysis of N-O-nitrophenyl- and N-2,4-dinitrophenyl-α-amino-acids

Biosynthesis of terpenes and steroids. Part IV. Specific hydride shifts in the biosynthesis of lanosterol and β-amyrin

Transformation of the steroidal sapogenin side chain. Part II. A new method for the preparation of 16-alkylated-pregn-16-en-20-ones

Natural acetylenes. Part XXXII. A synthesis of crepenynic acid (octadec-9-en-12-ynoic acid)

Novel analgesics and molecular rearrangements in the morphine–thebaine group. Part XIX. Further Diels–Alder adducts of thebaine

Novel analgesics and molecular rearrangements in the morphine–thebaine group. Part XX. Reaction of 7β-cyano-6,14-endo-etheno-7α-methyl-6,7,8,14-tetrahydrothebaine with phenylmagnesium bromide

The synthesis and mass spectra of 3-hydroxy-2,3,4,5-tetrahydro-1,5-benzoxazepine and related compounds

The reaction of 3-hydroxy-2-naphthanilide with chloro-s-triazines

The formation of derivatives of bicyclo[3,2,1]octane in reactions between carbanions and quinones

The acid-catalysed addition of phenols and acetic acid to alkenes

Polyfluorocycloalkenes. Part IX. Reactions of 1H,2H-octafluorocyclohexene, -hexafluorocyclopentene and -tetrafluorocyclobutene with methanol under ionic conditions

Polyfluorocycloalkenes. Part X. Replacement reactions of octafluorocyclohexa-1,3- and -1,4-diene

Sporidesmins. Part XI. The reaction of triphenylphosphine with epipolythiodioxopiperazines

Heterocyclic rearrangements. Part XIII. The conversion of a nitro-2,1-benzisoxazole into an acylbenzofurazan, and some unsuccessful rearrangements and oxygen transfer reactions

Syntheses with isoxazoles; the production of an isoxazolo[2,3-a]pyridinium salt, and the photochemical conversion of isoxazole-3-carboxylates into oxazole-2-carboxylates

Hydroxy-steroids. Part XVI. The preparation of 2,3-acetoxy-ketones and 2,3-diols from lupan-3-one

Some o-substituted NN-dimethyl-2-halogeno-2-phenylethylamines

On the dealkylation of aromatic ethers with nitrous acid

The preparation of a nitropyrido[3,4-c]furoxan: 7-nitro[1,2,5]oxadiazolo-[3,4-c]pyridine 3-oxide

Photo-acetalisation of α-aryloxyacetones

Addition of free radicals to unsaturated systems. Part XIX. The direction of radical addition ot 1,1,1-trifluorobut-2-ene

Polyhalogenoaromatic compounds. Part XVIII. Grignard reactions on pentachloropyridine 1-oxide

Polyhalogenoaromatic compounds. Part XIX. Metal–halogen exchange reactions of n-butyl-lithium with tetrabromo-4-pyridyl and tetrachloro-2-pyridyl derivatives

Reactive dyes. Part II. Synthesis and evaluation of dyes containing monochloropyrimidinium and monomethylthiopyrimidinium systems

Nuclear magnetic resonance study of hindered rotation in N-acyl derivatives of 5- and 6-membered N-heterocycles

The thermal rearrangement of 1-substituted 1H-azepines to 6-amino-fulvenes

Photoreduction of aromatic carbonyl compounds by tetra-n-butyltin and tri-n-butyltin hydride

Studies in the dithiocarbamate series. Part III. Mechanistic studies on the reaction of N-benzylpiperidines and N-benzylpyrrolidines with carbon disulphide

Studies in mycological chemistry. Part XXVI. Total synthesis of (±)-O-methylsterigmatocystin

Formation of some linear polycyclic diquinones via a novel dimerization

Phenanthro[9,10-d]imidazole derivatives. The structure of Zincke's ‘phenanthraquinone imide anhydride’

Fusicoccin. Part I. The nature of the substituent groups

Fusicoccin. Part II. The constitution of fusicoccin

Crystal and molecular structures of 6β-bromoacetyl- and 6β-chloroacetyl-3,5α-cyclo-5α-cholestane (i-cholesteryl bromoacetate and chloroacetate)

Polyfluorocyclopentadienes. Part VII. Reaction of phenyl azide with 2,3,4,5,5,6-hexafluorotricyclo[5,2,1,0^{2, 6}]deca-3,8-diene and endo-perfluorotricyclo[5,2,1,0^{2, 6}]deca-3,8-diene, and long-range ¹⁹F–¹⁹F couplings in the product from the latter

Thieno[3,2-c]pyridazine: synthesis and derivatives

Calciferol and its relatives. Part X. Ring-contraction routes to some 8-methyl-trans-perhydroindanones

Calciferol and its relatives. Part XI. Improved routes to (S)-3-hydroxymethyl-4-methylcyclohex-3-en-1-ol

Synthesis of unsaturated α-amino-acids

Thieno[2,3-b][1]benzothiophen and thieno[3,2-b][1]benzothiophen. Part III. Substitution reactions of derivatives with substituents in the thiophen ring

The mechanism of a steroidal aromatization reaction

Isothiazoles. Part XIV. 5-Alkoxy- and 5-hydroxyisothiazoles

Phytochemical examination of the lichen, Lecanora rupicola(L.) Zahlbr

Synthesis of sordidone and thiophanic acid, two chlorine-containing lichen metabolites

The behaviour of quaternary salts under reduced pressure. Part I. Improvement in yield during Hofmann elimination

The behaviour of quaternary salts under reduced pressure. Part II. Decomposition of the N-methylammonium hydroxides of benzyl-, dibenzyl-, and diphenylmethyl-amines

Extractives from Guttiferae. Part XIX. The isolation and structure of two benzophenones, six xanthones and two biflavonoids from the heartwood of Allanblackia floribunda Oliver

Polyfluoroarenes. Part XVI. A convenient synthesis of pentafluorobenzonitrile

Polyfluoroarenes. Part XVII. Some reactions of pentafluorobenzonitrile

Synthesis of polynuclear heterocycles. Part III. Imidazo[4,5-f]benzofuroxans and -furazans

Dihydrobenzimidazole chemistry. Part V. The reaction of quaternised dihydrobenzimidazoles with nucleophiles

Mechanism of formation of benzimidazoles by oxidation of o-acylamino-NN-dialkylanilines with peroxy-acids

Enamine chemistry. Part XI. Reaction of αβ-unsaturated acids and acid chlorides with imines. Synthesis of 2-oxotetrahydropyridines and 2-oxo-octahydroquinolines

A synthesis of 2-O-methyl-D-lyxose

Studies on ferrocene derivatives. Part X. Reaction of acetylferrocene with methylmagnesium iodide and of ferrocenyl alcohols with Grignard reagents

Ozonation of tertiary aromatic amines. Part I

Substituted oxindoles. Part IV. 3-Alkylation of 1-methylindol-2(3H)-one (1-methyloxindole)

Synthesis of terminal N-thiobenzoyl peptides by use of 4-substituted 2-phenylthiazol-5(4H)-ones as acylating agents for amino-acids and peptides. Optically-active 4-substituted 2-phenylthiazol-5(4H)-ones

Aromatic nitro-compounds. Studies of the amination of 9-nitrophenanthrene and of the mononitrobiphenylenes

Dioxolan-4-ones and their structures

The chemistry of santonene. Part VI. The chemistry of pyrosantonin

Reactions of quinones with aromatic ethers. Part I. Polyalkoxydibenzo[fg,op]naphthacene-1,8-quinones from chloranil and 3,3′,4,4′-tetra-alkoxybiphenyls

Reactions of quinones with aromatic ethers. Part II. Polyalkoxytriphenylenes and -dibenzo[fg,op]naphthacene-1,10-quinones from chloranil and o-dialkoxybenzenes

The reactions of o-benzoquinones with cyclopentadiene

The Diels–Alder reactions of o-benzoquinones with acyclic dienes

The reactions of tetrachloro- and tetrabromo-o-benzoquinone with acyclic dienes

The reactions of some ortho-naphthoquinones with 2,3-dimethylbutadiene

The circular dichroism of the n→π* band of cyclic thionocarbonates. Part I. The relationship between the magnitude and sign of the cotton effect, and the chirality of the five-membered thionocarbonate ring

Cytotoxic compounds. Part XII. Some 3-arylthiopropane-1,2-diols and 2-arylthiopropane-1,3-diols. Rearrangement of the 1,3-dimethanesulphonates to the 1,2-isomers

Cytotoxic compounds. Part XIII. Some 1-arylthiopropan-2-ols and 2-arylthiopropanols. Rearrangement of the primary methanesulphonates into the secondary isomers

Oxymetallation. Part II. The t-butyl peroxymercuration and methoxymercuration of αβ-unsaturated ketones and esters

D-Glucose 1-phosphate formation by cyanogen-induced phosphorylation of D-glucose. Synthesis, mechanism, and application to other reducing sugars

Circular dichroism of some optically active steroidal iodides

Steroids. Part XIV. Transformations of 8α,9α- and 9α,11α-epoxylanostanes and related compounds

Keten. Part X. The reaction of dimethylketen with pyridine N-oxide

Reactions of organic peroxides. Part XVII. Hydroperoxides from cyclohexanone cyclohexylhydrazone and hydrazocyclohexane

Expansion of the ring of cyclododecanone by two and four carbon atoms

Benzopyrones. Part III. Synthesis and mass spectra of some oxopyranobenzoxazolecarboxylic esters

Thiacycloheptadeca-3,8,10,15-tetrayne and thiacycloheptadeca-2,8,10,16-tetrayne-4,15-diol. Attempted synthesis of thia[17]annulene

The shikimate pathway. Part I. Introduction; preparation of stereospecifically labelled 2-deuterio-derivatives of 3-dehydroquinic acid

The shikimate pathway. Part II. Conformational analysis of (–)-quinic acid and its derivatives by proton magnetic resonance spectroscopy

Purines, pyrimidines, and imidazoles. Part XXXVI. Carboxylation of some 5-aminoimidazoles and related compounds, including nucleosides and nucleotides, with potassium hydrogen carbonate in aqueous solution

Conversion of aryl-N-sulphohydroxylamines (N-aryl-N-hydroxysulphamic acids) to o-aminoaryl hydrogen sulphates by acetone, and related reactions

Crystal and molecular structure of 5,10-epoxy-, 5,10-epithio-, 5,10-episeleno-, and 5,10-epitelluro-5,10-dihydroarsanthren

The acetolysis and benzolysis of some carbohydrate oxirans

3,6-Dioxocyclohexa-1,4-diene-1,2,4,5-tetracarboxylic acid dianhydride, a strong electron acceptor

Compounds related to biologically active steroids. 1,2,3,4,9,10-Hexahydro-6,7-dimethoxyphenanthrene-2-spirocyclohexan-2′-one

Synthesis and reactions of thiazolidino[3,2-a]pyrimidines

Intramolecular reactions. Part IX. Stereochemistry and mechanism of the rearrangement of acetylenic esters of sulphinic and sulphenic acids to allenes

Pyridazines. Part II. Reaction of polychloropyridazines with trimethylamine

New metabolites of Gibberella fujikuroi. Part XVII. The partial synthesis of gibberellin A₁₅ norketone from 7-hydroxykaurenolide

Fulvenes and thermochromic ethylenes. Part LIX. The reaction of diphenylcyclopropenone with cyanoacetic acid

Aromatic polyfluoro-compounds. Part XLVII. The reactions of pentafluorophenyl-lithium with halogeno-olefins

Diels–Alder reactions of polyfluorocyclohexa-1,3-dienes. Part IV. Addition of alkynes to 1H,2H-hexafluorocyclohexa-1,3-diene

Studies in ferrocene derivatives. Part XI. Synthesis of some ferrocenyldihalogenocyclopropanes

Studies in ferrocene derivatives. Part XII. Synthesis of ferrocenyl-1,2- and 1,3-dienes from some dibromo(ferrocenyl)cyclopropanes

Studies in ferrocene derivatives. Part XIII. Synthesis and rearrangement of ferrocenylbicyclopropyls

Studies in ferrocene derivatives. Part XIV. Solvolytic reactions of some ferrocenydihalogenocyclopropanes

A simple preparation of 1α,2α-epoxy-3-oxo-Δ⁴-steroids

Triterpenoids. Part VII. Photoisomerisation of 11-oxo-12-enes

Heterogeneous reactions of copper(II) chloride with toluene, p-xylene, and mesitylene

Optical rotatory dispersion and circular dichroism. Part LXXI. Low temperature circular dichroism of some tertiary carboxylic acids

The deamination of pyranose amines. Part I. Equatorial amines

Nuclear magnetic resonance evidence regarding the stereochemistry of some cyanoindanylidene compounds

Transition metal complexes of some compounds related to intermediates in the biosynthesis de novo of purine nucleotides

Preparation of 6-trimethylammoniopurinides and their isomerisation to 3- and 9-methyl analogues of 6-dimethylaminopurines

The reaction of picryl and toluene-p-sulphonyl azides with alkylindolizines

The reaction of cycloheptatriene with acyl halides in the presence of Lewis acids. A convenient synthesis of 1-acylcycloheptatrienes

Thyroxine analogues: synthesis and nuclear magnetic resonance spectral studies of diphenylamines

Polycyclic fluoroaromatic compounds. Part V. Nucleophilic replacement in decafluorophenanthrene

The biosynthesis of santiaguine

Reactions of 2,3-dihydro-4-methylphenalen-1-one

Purines, pyrimidines, and imidazoles. Part XXXVII. Some new syntheses of pyrazolo[3,4-d]pyrimidines, including allopurinol

Reaction of trans-1,2-dichloroethylene with phosphorus trichloride–oxygen: the direct formation of a phosphate derivative from an olefin

Synthesis of 1,4-dihydropyrimido[2,1-c][1,2,4]triazin-6-ones involving a new ring expansion

Coumarins and related compounds. Part XIII. Synthesis of 2-oxonaphtho[1,2-b]pyran-6-propionic acid

Reactions of phosphines with acetylenes. Part XIV. Isomeric 1 : 2 adducts from triarylphosphines and dimethyl acetylenedicarboxylate. A cyclopentenylidenephosphorane

Metabolites of Lasiodiplodia theobromae

The nuclear alkylation of pyrazines by ketones and aldehydes

A convenient synthesis of 3-furoic acid and 3-acetylfuran

Nucleophilic displacement reactions in carbohydrates. Part XVIII. Syntheses of derivatives of 3,5-diacetamido-3,5-dideoxy-L-arabinose and 3,5-diacetamido-3,5-dideoxy-L-lyxose

The chemistry of ortho-benzoquinones. Part V. Cycloaddition reactions of indane-5,6-quinone, 5,6,7,8-tetrahydro-2,3-naphthoquinone, and of 4,5-dimethyl-1,2-benzoquinone with cyclopenadiene

Hydroformylation of (+)(S)-3-methylpent-1-ene

The synthesis of the alkaloids (±)-fumaritine and fumariline

Deamination of amino alicyclic carboxylic acids

Lythraceous alkaloids. Part IV. Structure and absolute configuration of lythranine, lythranidine, and lythramine

Acylation of 2,2,6,6-tetramethylpiperidine and 2,2,5,5-tetramethylpyrrolidine

Preparation of pyrazoles from the C(α)NN-trianion of hydrazones having an α-hydrogen atom

Peroxides of elements other than carbon. Part XVII. The reaction of trialkylstibines and trialkylbismuthines with t-butyl hydroperoxide and with oxygen

The synthesis of 2,2,3,3-tetramethyl-β-alanine

Tautomeric N-substituted 2-phenacylisothiouronium bromides

The tautomerism of N-methyl-2-phenacylthioimidazoline

Optical rotatory dispersion and circular dichroism. Part LXXII. (2R)-Mercaptopropionic acid and related compounds

Tautomeric forms and ionisation processes in xanthine and its N-methyl derivatives

The photosensitized decarboxylation of carboxylic acids by benzophenone and quinones

Studies in the flavin series. Part XVI. Alkylation and rearrangement reactions of dihydroalloxazines

Naturally-occurring compounds related to phenalenone. Part II. The synthesis of haemocorin aglycone

Isomerism in arylsulphonylamidines

Reactions of some dicarbonyl compounds. Part II

The circular dichroism of some 2,2′-bridged biphenyls. The absolute configuration of (+)-6,7-diphenyldibenzo[e,g][1,4]diazocine-3,10-dicarboxylic acid

Tetranortriterpenoids and related substances. Part XIII. The constitution of grandifoliolenone, an apo-tirucallol derivative from Khaya grandifoliola(meliaceae)

Thermolysis of o-nitro- and 2,4-dinitro-phenoxyacetic acids and related compounds

Polypeptides. Part XV. The synthesis and oxidation of some L-cysteinylpolyglycyl-L-cysteines

Chemical modification of trehalose. Part VI. The synthesis of analogues containing 2,2′-dideoxy-functions

A simple preparation of tri-isopropylanisoles

Studies on conformation and reactivity. Part IX. Stereochemical aspects of the Diels–Alder reaction of diethyl azodicarboxylate with steroid dienes

Homolytic acylation of benzothiazole. A diagnostic criterion for the presence of acyl radicals

Phenol oxidation mechanisms. A search for phenoxylium intermediates

The resolution of 2-chlorofluoren-9-ol and the preparation of (+)- and (–)-2,9-dichlorofluorene, (+)-9-bromo-2-chlorofluorene, and the corresponding racemic compounds

Proton nuclear magnetic resonance spectra of phosphorus-containing esters with transition-metal ions

Ring-opening reactions of 7,7-dichlorobicyclo[3,2,0]hept-2-en-6-one and its conversion into methyl benzoate with methoxide ion

Organotin chemistry. Part IX. Functionally substituted metallostanoxanes

Aspects of tautomerism. Part II. Reactions of the pseudo-acid chloride of o-benzoylbenzoic acid with nucleophiles

Oxidation of alkoxyphenols. Part XIX. Base-induced coupling of halogenophenols

A galactan from onion (Allium cepa Linn.) pectic substance

Total synthesis of O-methylandrocymbine by a photo-Pschorr reaction and synthesis of thalifoline

Studies on the syntheses of heterocyclic compounds. Part CCCXCII. An alternative total synthesis of petaline

Studies on the syntheses of heterocyclic compounds. Part CCCXCIII. Synthesis of norerythrinadienone by phenolic oxidative coupling

Formation of indole derivatives by phenolic oxidative coupling

Cyclised products in the synthesis of 6-substituted phenanthridines by phenolic cyclisation

Sesquiterpenes. Part V. Some tricyclic undecanols and related β-iso-propyldecalols

Quinazolines. Part XVI. A stereospecific cis-addition of the elements of nitromethane across a tetrasubstituted ethylenic double bond

The rearrangement of exo-2-bromobicyclo[2,2,1]heptane-1-carboxylic acid during reduction with lithium aluminium hydride

Methylation reactions of 6-methylthio-8-phenylpurines

Enamine chemistry. Part XII. Reaction of acid chlorides with cross-conjugated dienamines. Synthesis of γ-pyrones, dihydro-γ-pyrones and biphenyls

The synthesis and thermal rearrangement of oxime thiocarbamates

Reaction of phenylphosphonous acid with carbonyl compounds

Organic reactions in strong alkalis. Part V. Alkali fusion of epoxides and ethers

Organic reactions in strong alkalis. Part VI. Further studies on alkali fusion reactions of keto- and hydroxy-acids

Organic reactions in strong alkalis. Part VII. Fission of unsaturated acids by alkali fusion in potassium deuterioxide

The autoxidation of 9(10)-hydroxy-10(9)-oxo-octadecanoic acid in alkaline media

Studies on intramolecular Friedel–Crafts cyclisation. Part II. Synthesis of 7-methoxy-8-methyl-1-tetralone

Photolysis of phenacyl-sulphonium and -ammonium salts

Reactions of group IV organometallic compounds. Part XXII. An extensive study on preparation of some oxadiazinones by the reaction of N-trimethylmetal(IV)dialkylamines with benzoyl isocyanate

Synthesis of [1,4]benzoxazino[2,3-b]phenoxazines and [1,4]benzothiazino[2,3-b]phenothiazines

Retinol analogues. Part I. Synthesis of acyclic analogues of retinoic acid

Lichens and fungi. Part VIII. 18α-Oleanane

Lichens and fungi. Part IX. 17αH-hopane and 17αH-moretane and their derivatives

Pyrimidine reactions. Part XXII. The relative reactivities of some corresponding chloro-, bromo-, and iodo-pyrimidines in aminolysis

Formation of 2-methylaminopyridine-3-carbaldehyde and the corresponding methylimine by ring-opening and ring-closing reactions of 3-cyano-1-methylpyridinium iodide in N-sodium hydroxide

Transformations in ring a of methyl glycyrrhetinate

Adducts from quinones and diazoalkanes. Part VIII. Further reactions of 2-methyl-1,4-naphthoquinone with carbanions

Products from diborane reduction of αβ-unsaturated ketones: trans-and cis-1β-acetoxy-8aβ-methyl-Δ⁵-octalin

Unsaturated carbohydrates. Part XVI. Isomerisation of allylic 4-azides and 4-thiocyanates and the subsequent synthesis of 2-acetamido-2-deoxyhexopyranoside derivatives

Polyhalogenoaromatic compounds. Part XX. Some reactions of decachlorobiphenyl

Derivatives of 6-aminopenicillanic acid. Part X. A non-enzymic conversion of benzylpenicillin into semi-synthetic penicillins

Derivatives of 6-aminopenicillanic acid. Part XI. α-Amino-p-hydroxy-benzylpenicillin

Studies on the syntheses of heterocyclic compounds. Part CD. Total syntheses of NO(10)-dimethylhernovine and kreysigine by photolysis of diazotised isoquinolines

Studies on the syntheses of heterocyclic compounds. Part CDI. Rearrangement of β-hydroxylaudanosine

The alkaline hydrolysis of sterically crowded phosphonium salts

Synthetic analogues of polynucleotides. Part V. Analogues of trinucleoside diphosphates containing carboxymethylthymidine

Nuclear magnetic resonance spectra of xanthines and thioxanthines

Heterocyclic studies. Part XVIII. Some 6,7-diaminoimidazo[1,2-a]-pyrimidines and derived tricyclic compounds

Heterocyclic studies. Part XIX. Some 6-(substituted phenyl)-uracil and -thiouracil derivatives

Heterocyclic studies. Part XX. The action of hydrazine on some 1,3-dimethyl-lumazines

Nitroxide chemistry. Part I. Reactions of bistrifluoromethyl nitroxide with acetylene, 3,3,3-trifluoropropyne, perfluoropropyne, perfluorobut-2-yne, perfluorodiphenylacetylene, and glyoxal

Heterocyclic polyfluoro-compounds. Part XX. Nucleophilic substitution in perfluoro-(4-phenylpyridine)

The photochemistry of ketones derived from carbohydrates. Part I. Type I cleavage of a pyranosid-4-ulose

The photochemistry of ketones derived from carbohydrates. Part II. Evidence for a biradical mechanism in type i ring contraction of pyranosid-4-uloses to furanosides

Biosynthesis of terpenes and steroids. Part V. The synthesis of ergosta-5,7,22,24(28)-tetraen-3β-ol, a biosynthetic precursor of ergosterol

Pyrroles and related compounds. Part XIX. Synthesis of phylloporphyrins related to chlorobium chlorophyll (660)

The structure of a new flavone, ‘arthraxin’

Unsaturated compounds containing nitrogen. Part I. The synthesis and disproportionation of 1-chloro-azines, and their reactions with nucleophiles

Carcinogenic nitrogen compounds. Part LXX. Polycyclic naphthyridines by means of the Ullmann–Fetvadjian reaction

Synthesis of the natural isoflavanones ferreirin, dalbergioidin, and ougenin

Naturally occurring quinones. Part XIX. Anthraquinones in hymenodictyon excelsum and damnacanthus major

Naturally occurring quinones. Part XX. Anthraquinones in digitalis purpurea

Sesquitepenes. Part VI. Stereochemistry of hydroboration of some tricyclo[5,4,0,0^3,5]undecenes and related β-isopropyloctalins

Enol elimination reactions. Part IV. Some improvements to the synthesis of conjugated acetylenic acids

Synthesis and reactions of pyrrolo[2,1-c][1,2,4]benzotriazine and 4-oxo-4H-pyrrolo[2,1-c][1,4]benzoxazine

Studies of organophosphorochloridates. Part II. Reactions of steroid phosphorodichloridates

Studies of organophosphorochloridates. Part III. Synthesis of N-substituted pyrophosphoramides

Constitutents of Withania somnifera Dun. Part XII. The withanolides of an indian chemotype

Cyclic hydroxamic acids. Part I. Synthesis and reactions of 1,2-di-hydro-1-hydroxy-4,6-dimethyl-2-oxopyridine-3-carbonitrile

Pyridine-2-thiones, 2-pyrone phenylhydrazones, and 2-pyridones from 2-pyrones

Solution photodimerization of 1,3-dimethyluracil

Applications of high-potential quinones. Part VI. Stereoelectronic effects in the dehydrogenation of neoergosterols

New reactions of polyfluoroaromatic compounds. Part II. Polyfluoroaralkyl amines

Cyclization of some Δ⁷-22-hydroxy-steroids to 14β,22-ethers

Re-examination of the reaction of β-naphthol with trans-p-nitrobenzene-diazocyanide: a novel fission of the azo double bond

The stereochemistry of organometallic compounds. Part X. Further evidence as to the mechanism of borohydride reduction of organomercurials from a study of photochemical and organotin hydride reductions

Benzopyrones. Part IV. Pyrano[1,4]benzoxazinones and some dihydrobenzoxazines: synthesis, mass, and nuclear magnetic resonance spectra

Biosynthesis of dolicotheline

The preparation of phenazines by the cyclisation of 2-nitrodiphenylamines

Arylnaphthalene lignans: synthesis of helioxanthin

The reactions of 2-aminothiazoles and 2-aminobenzothiazoles with propiolic acid and its esters

The preparation of derivatives of dibenz[b,d]oxepin

The preparation and properties of thiophen analogues of porphyrins and related systems. Part III

Enamine chemistry. Part XIII. Reaction of αβ-unsaturated acid chlorides with primary and secondary enamines. Synthesis of tetrahydro-2-oxopyridines and octahydro-2-oxoquinolines

Some ring-A fused heterocycles in the lanosterol series

N-aryl-N-phenylhydroxylamines from phenylmagnesium bromide and nitro-compounds

Chemical modification of trehalose. Part VIII. The synthesis of 3,3′-dideoxy-analogues

The chemistry of terpenes. Part XIII. Synthesis of (+)-3β,7,7-trimethyl-anti,cis,anti-tricyclo[4,1,0,0^2,4]heptane and (±)-trans-3-(1-hydroxyethyl)-6,6-dimethylbicyclo[3,1,0]hexane, deamination products of the cis-caran-4-amines

The chemistry of terpenes. Part XIV. Syntheses of (±)- and (+)-fenchone, and (+)-cis-2,2,5-trimethyl-3-vinylcyclopentanone, a photoisomer of (–)-trans-caran-4-one

Studies on heteroaromaticity. Part XLVIII. Cycloaddition reactions of 4-phenyl-1,2,4-triazoline-3,5-dione with seven-membered ring unsaturated compounds and photochemical behaviour of the adducts

The chemistry of cyanoacetylenes. Part IX. Preparation of pyrazole derivatives via 1,3-dipolar cycloaddition reactions of cyanoacetylenes with diazomethane, N-phenylsydnone, and diphenylnitrilimine

α-Cyano-sulphonyl chlorides: their preparation and reactions with amines, alcohols, and enamines

The chemistry of polyazaheterocyclic compounds. Part V. The synthesis and reactivity of the v-triazolo[3,4-a]pyrimidine ring system

The reaction of 2-aminopyridine with some β-keto-esters in the presence of polyphosphoric acid ethyl ester

Experiments on the synthesis of tetracycline. Part I. Introduction to the series

Experiments on the synthesis of tetracycline. Part II. The synthesis of potential ring a and ring C–ring D components

Experiments on the synthesis of tetracycline. Part III. Michael-type cyclisation in the formation of ring B

Experiments on the synthesis of tetracycline. Part IV. Ring B formation through 1,3-dipolar additions

Experiments of the synthesis of tetracycline. Part V. Photocyclisation of ring B

Experiments on the synthesis of tetracycline. Part VI. Oxidation and reduction of potential ring A precursors

Experiments on the synthesis of tetracycline. Part VII. The total synthesis of 6-methylpretetramid

Experiments on the synthesis of tetracycline. Part VIII. An attempted total synthesis of 4-hydroxy-6-methylpretetramid

Experiments on the synthesis of tetracycline. Part IX. The synthesis and rearrangement of 6-acyloxycyclohexa-2,4-dienones

Experiments on the synthesis of tetracycline. Part X. Synthesis of a tetracyclic compound suitable for 12aα-hydroxylation

Light-induced and related reactions of quinones. Part VII. Cleavage and isomerisation of some (1-hydroxyalkyl)-1,4-benzoquinones

4-Amino-2,3,4,5-tetrahydro-1-benzoxepin-5-ols, 4-amino-2,3,4,5-tetrahydro-1-benzothiepin-5-ols, and related compounds

Metabolic products of Stemphylium radicinum. Part IV. Minor products

Reversible isomerisation of alkyl aromatics

The reactions of lead tetra-acetate with substituted benzothiazolylhydrazones

Diels–Alder reactions with alkyl coumalates

One-electron transfer properties of diquaternary salts of 2-(2-pyridyl)-quinoline

The effect of chloro-substituents on the rate of nitrogen inversion in 1-phthalimidoaziridines

Nitrophenylcarbenes. Part I. The catalytic and photolytic decomposition of α-diazo-3-nitrotoluene in the presence of olefins

Heterocyclic studies. Part XXI. Synthesis and covalent hydration of some 2-substituted 4-trifluoromethylpteridines

The induced decomposition of t-butyl peroxide in solution. Part III. Decomposition of t-butyl peroxide in alkyl benzyl ethers; steric effects

The structures and thermal rearrangements of alkylated palladium and copper corroles

Alkylated steroids from tosylhydrazones and alkyl-lithiums

Novel analgesics and molecular rearrangements in the morphine–thebaine group. Part XXI. Alcohols derived from 7-methyl-epi-nepenthone

Novel analgesics and molecular rearrangements in the morphine–thebaine group. Part XXII. Deamination of 7β-aminomethyl-6,14-endo-etheno-7α-methyl-6,7,8,14-tetrahydrothebaine

Hydroxy-steroids. Part XVII. The 5α-androstane-16,17-diols and related compounds

Nucleophilic displacement reactions in carbohydrates. Part XIX. The reaction of methyl 6-deoxy-3-O-methyl-4-O-methylsulphonyl-2-O-p-tolylsulphonyl-α-D-allopyranoside with sodium benzoate in hexamethylphosphoric triamide: a vicinal axial substituent effect

Carcinogenic nitrogen compounds. Part LXXI. Acridines from 5-aminobenzo[b]selenophen

The action of sodium sulphide on 1,3,4-oxadiazolium salts

The dimerisation of 5-methylene-Δ²-1,3,4-oxadiazolines

Triazines and related products. Part VIII. Potential irreversible chymotrypsin inhibitors: 3-alkyl-1,2,3-benzotriazin-4(3H)-ones and o-azidobenzamides

A probe for homolytic reactions in solution. Part V. Perdeuterionitrosobutane: an improved spin trap

Synthesis of the isomers of the mono- and di-hydroxy-analogues of cystine and comparison with metabolites excreted in the urine

Friedel–Crafts acylations of aromatic hydrocarbons. Part X. Benzoylation of phenanthrene

Studies of O-methylation. Some factors affecting the ratio of glycosides produced in the methylation of L-rhamnose derivatives

Keten. Part XI. The addition of dimethylketen to N-(2,6-xylyl)benzylideneamine N-oxide

The hydrolysis of arylmethylenemalononitriles to α-cyanocinnamides in the presence of triphenylphosphine

Asymmetric syntheses. Part V. The absolute configuration of some acetylenic alcohols

The photosensitised oxidation of amines. Part I. The use of benzophenone as a sensitiser

The photosensitised oxidation of amines. Part II. The use of dyes as photosensitisers: evidence that singlet oxygen is not involved

Calciferol and its relatives. Part XII. (S)-3-ethynyl-4-methylcyclohex-3-en-1-ol

Oxidation of olefins by manganese(III) acetate to give allylic acetates

Pteridine studies. Part XL. The synthesis of 4-unsubstituted pteridines from 3-aminopyrazine-2-carbaldehyde

The Friedel–Crafts acylation of aromatic halogen derivatives. Part V. The reaction of aluminium chloride with iodobenzene and the iodotoluenes

Synthesis of 3-methylisoguanine [6-amino-3-methylpurin-2(3H)-one]

Free-radical reactions of halogenated bridged polycyclic compounds. Part XIV. The cobalt(II) chloride-catalysed reaction of methylmagnesium iodide with 5-endo-bromo-1,2,3,4,7,7-hexachloronorborn-2-ene and related compounds

Some steroidal p-aminophenyl ethers and their N-methyl and NN-dimethyl analogues

The stobbe condensation of 3,4-disubstituted acetophenones with diethyl succinate

2-Isoxazoline derivatives. Part IV. Bromination of some dihydro-acenaphtho[1,2-d]isoxazole derivatives

Synthesis of 1-iodo- and 1,2-di-iodo-perfluorocyclo-olefins and reductive coupling of the latter in the presence of copper bronze

Some derivatives of NN′-biscarboxymethyl- and NN′-bis-(β-carboxyethyl)-ethylenediamine

A total synthesis of (±)-capaurimine

The biosynthesis of pilocereine. Part II

Tropylidene quinones and their tricarbonylchromium complexes

Unsaturated nitrogen compounds containing fluorine. Part I. The thermal and photochemical reactions of hexafluoroacetone azine with acetylene and with hydrocarbon terminal olefins

Reduction by dissolving metals. Part XVII. Metal–ammonia reductions of some conjugated dienamines

Chemistry of hop constituents. Part XXXVII. Separation and characterisation of cis- and trans-isohumulone and deduction of absolute configurations

The significant directing effect of the cyano-group in the reduction of 5-cyano-3-oxo-steroids with complex metal hydrides

The structure and stereochemistry of gangetin, a new pterocarpan from Desmodium gangeticum(Leguminosae)

Rearrangement of 1α,2-epoxy-3-oxo-5α-steroids

Some stereospecific reactions of dibromides from o-cyanocinnamonitriles and related compounds

Thiophen derivatives. Part XXI. New nitrogen-containing heterocyclic systems from 5-aminobenzo[b]thiophen

A convenient synthesis of cis-bicyclo[3,3,0]octane-1-carboxylic acid

Two new mould metabolites related to avenaciolide

The synthesis and reduction of optically active 2-mercaptopropionic acid and some derivatives

Pyrazolopyrimidine nucleosides. Part I. Synthesis of pyrazolopyrimidine nucleosides related to the nucleoside antibiotic tubercidin

Pyrazolopyrimidine nucleosides. Part II. 7-Substituted 3-β-D-ribofuranosylpyrazolo[4,3-d]pyrimidines related to and derived from the nucleoside antibiotics formycin and formycin B

Studies on total photolytic syntheses of alkaloids. Part V. Total syntheses of flavinantine, amurine, bracteoline, and domesticine by photolysis of the appropriate 1-(2-bromobenzyl)isoquinolines

Synthesis of pyrido[1,2-b][2,4]benzodiazepin-6(11H)-one and related compounds

Cyclic organophosphorus compounds. Part XII. Use of 2-benzoyloxy-5,5-dimethyl-2-oxo-1,3,2-dioxaphosphorinan under steric control in acylations

Organolithium chemistry of N-heterocycles. Part III. Reduction of 2-methylquinoline by lithium in tetrahydrofuran

Resolution and thermal racemisation of nickel 1,19-dimethyltetradehydrocorrin salts

Crystal structure of a cyclopentenylidenephosphorane isolated from the reaction of tri-p-tolylphosphine and dimethyl acetylenedicarboxylate

Organometallic complexes in synthesis. Part III. The reaction of concentrated sulphuric acid with tricarbonylcyclohexa-1,3-dieneiron complexes: a preparation of certain alkyltricarbonyl-π-cyclohexadienyliron salts

Studies on lactams. Part XIV. The synthesis of a structural isomer of penicillin

Syntheses of 3-(2,4-dimethyl-5-oxocyclopent-1-enyl)propionic acid and 2-methyl-3-oxo-4-isopropylidenecyclopentanecarboxylic acid

Heterocyclic studies. Part XXIII. 5-Trifluoromethylpyrimido[5,4-e]-as-triazines

The reactions of toluene-p-sulphonyl azide with 2,3-dimethylindole, 1,2,3-trimethylindole, tetrahydrocarbazole, and 9-methyltetrahydrocarbazole

Seco-steroids. Part I. 15,16-Secoprogesterone

Seco-steroids. Part II. 9,11-Secoprogesterone

Seco-steroids. Part III. 5,6-Secoprogesterone

Quinazolines. Part XVII. Orientation of the nitrogen lone pairs in trans-decahydroquinazolines

Condensed thiophen ring systems. Part VI. Synthesis and some reactions of 5-methyl- and 5-chloro-3-benzo[b]thienyl-lithium

The dimroth rearrangement. Part XIV. The preparation and rearrangement of 1,6-dihydro-6-imino-1-methylpyrimidine

The reaction between aromatic compounds and derivatives of tertiary acids. Part XI II. The structure of phenylcamphoric acid

Raman spectra and frequency calculations for some steroids

The chemistry of triterpenes and related compounds. Part XLVII. Crystal and molecular structure of ‘compound B’, a triterpene dimethyl ester ɛ-lactone from dammar resin

Crystal structure of the diterpene tinophyllone

Epoxides of some pyrazolylprop-2-en-1-ones and their reactions

The synthesis and ultraviolet and nuclear magnetic resonance spectra of some 9-substituted 9,10-dihydroacridines

The chlorination of indole alkaloids and related compounds with 1-chlorobenzotriazole

Studies on the syntheses of heterocyclic compounds. Part CDVIII. Crystal structure of capaurimine mono-p-bromobenzoate

A new 2-phenyl-4H-1-benzopyran (flav-2-ene) synthesis

The pyrethrins and related compounds. Part XI. Synthesis of insecticidal esters of 4-hydroxycyclopent-2-enones (nor-rethrins)

The pyrethrins and related compounds. Part XII. 5-Substituted 3-furoates and 3-thenoates, intermediates for synthesis of insecticidal esters

Nucleophilic heteroaromatic substitution. Derivatives of pyrrolo-[2,1-b]oxazole

Lithium alkyl(hydro)dipinan-3α-ylborates. New reagents for asymmetric reduction of ketones

Asymmetric reduction of imines with lithium butyl(hydro)dipinan-3α-yl-borate and related reagents

Steroid conjugates. Part IV. The influence of the cation in borohydride reduction of ketol sulphates

Applications of high-potential quinones. Part VII. The synthesis of steroidal phenanthrenes by double methyl migration

The photochemical conversion of some heterocyclic acraldehydes into derivatives of propionic acid

Preparation of mononitropyrogallols and their methyl ethers, acetates, and benzenesulphonates

Preparation and deamination of cyclohex-1-enyl- and cyclohexa-1,4-dienyl-methylamine

Constituents of the higher fungi. Part XI. Boviquinone-3, (2,5-dihydroxy-3-farnesyl-1,4-benzoquinone), diboviquinone-3,4, methylenediboviquinone-3,3, and xerocomic acid from Gomphidius rutilus Fr. and diboviquinone-4,4 from Boletus(Suillus)bovinus(Linn ex Fr.) Kuntze

Friedel–Crafts acylations of aromatic hydrocarbons. Part XI. The acetylation and benzoylation of 2,6-dimethylnaphthalene

Acid-catalysed reactions of N-(diphenylmethylene)methylthiomethyl-amine N-oxide and O-(methylthiomethyl)benzophenone oxime

Thermal reactions of N-(diphenylmethylene)methylthiomethylamine N-oxide

The structure of leucogenenol

Carcinogenic nitrogen compounds. Part LXXII. The Möhlau–Bischler reaction as a preparative route to 2-arylindoles

Synthesis and stereochemistry of Δ^2,2′-bi-(2H-1,4-benzothiazine) derivatives. Crystal structures of cis- and trans-Δ^2,2′-bi-(3-p-bromophenyl-2H-1,4-benzothiazine)

Aza-analogues of pteridine. Part IV. The transformation of 7-chloro-1,2-dihydro- into 5,7-disubstituted-pyrimido[5,4-e]-as-triazines via 5,6-adducts

Reduction of nitro- and nitroso-compounds by tervalent phosphorus reagents. Part IX. The ‘blocked ortho’ effect in reactions of 2,6-di-substituted aryl 2-nitrophenyl and 2,6-disubstituted aryl 2-azidophenyl sulphides: a new series of nitrene-induced aromatic rearrangements

Phenolic cyclisation. Part X. Isoquinoline cyclisation under basic conditions

2-Azafluoranthene

Reactions of 1,1-diarylethylenes with selenium compounds

Observations on the conversion of acetone into pinacol hydrate by magnesium amalgam

Studies on heterocyclic chemistry. Part VIII. Comparison of the thermally induced reaction of 4-substituted 5-aminoisoxazoles with the decomposition of isoxazoles by arylamine, with reference to a 2H-azirine intermediate

Studies on heterocyclic chemistry. Part IX. Reaction of 2-(carbonyl)-2H-azirines with hydrazine. A novel and unequivocal synthesis of 1,2,4-triazin-6-ones

Homogeneous catalysis by transition-metal complexes. Part II. An investigation of the hydrogen-transfer reaction catalysed by the henbest system

The preparation of nucleoside carbonates

Triterpenoids from Entandrophragma cylindricum sprague. Part II. The structures of sapelins C, D, E, and F

Autoxidation of polysubstituted isoindoles

Bicyclo[4,3,0]nonanes (hydrindanes). Part I

Bicyclo[4,3,0]nonanes (hydrindanes). Part II. Stability relationships

Homolytic aromatic substitution. Part XXXVI. Total and partial rate factors for the phenylation of some para-disubstituted derivatives of benzene

Approaches to heterocyclic analogues of biphenylene. Part I. The reaction of 5,6-diaryl-2,3-dihydropyrazines with alcoholic alkali

Synthesis of oligosaccharides on polymer supports. Part I. 6-O-(p-vinylbenzoyl) derivatives of glucopyranose and their copolymers with styrene

Acetylation and acetoxylation of 4-hydroxy-1,4-benzothiazin- and -benzoxazin-3(4H)-ones (cyclic hydroxamic acids)

The reactions with aldehydes of enaminones derived from dimedone

The biosynthesis of sclerin

Studies on the syntheses of heterocyclic compounds. Part CDXII. Total synthesis of canadine

Benzyne reaction. Part XII. Syntheses of amurine and domesticine by the benzyne reaction

Reactions of carbonyl compounds with tervalent phosphorus reagents. Part I. Cyclopentadienones

Reactions of acetonedicarboxylic anhydride (tetrahydropyrantrione) and its mono- and di-acetyl derivatives with amines

Preparation and uses of a poly(allyl carbonate)

A convenient preparation of cyclohexane-1,4-dicarbaldehyde and cyclohexane-1,1,4,4-tetramethanol

Further cyclisation reactions of 1-arylpyrroles

Quaternary salts of pyrido[1,2-a]pyrimidines

The acid thermal decomposition products of natural chrysanthemumdicarboxylic acid

Polyfluoroalkyl derivatives of nitrogen. Part XXIX. Reaction of N-bromobistrifluoromethylamine with cis- and trans-but-2-ene and of N-chlorobistrifluoromethylamine with trans-but-2-ene under ionic conditions

Cyclic quaternary ammonium salts. Part VIII. Imidazo[1,2-a]pyrazinium salts

Polyfluorocarbanion chemistry. Part I. Reaction of hexafluoropropene with tetrafluoropyrimidine

Reactions of pyridine N-oxides with 3,6-dichloropyridazine

Conformational free energy differences in steroids. Part VI. Intramolecular electrostatic interactions in 3-azidocholestan-6-ones: conformational preference of the azido-group

The conversion of tetrazolyl hydrazones into triazolyl azides via tetrazolyl hydrazidic halides

Chlorination of carbazole and its derivatives with 1-chlorobenzotriazole

Nitroxide chemistry. Part II. Reaction of bistrifluoromethyl nitroxide with some alkanes and alkenes; free-radical dehydrogenation of alkanes to alkenes

Isolation and characterization of a fungal vacuolation factor (bikaverin)

Crystal and molecular structure of the chloroform solvate of bikaverin

Bikaverin and norbikaverin, benzoxanthentrione pigments of Gibberella fujikuroi

Antituberculosis agents. Part II. α-[5-(2-Furyl)-1,3,4-oxadiazol-2-yl-thio]acetohydrazide and related compounds

Reactions of cyclo-octatetraene and its derivatives. Part III. Cycloocta-1,3,5-triene as a dienophile

Highly condensed polycyclic systems. Part III. Pentacyclo-[5,5,1,0^2,6,0^3,10,0^4,8]tridec-11-enes

The photosensitised oxidation of amines. Part III. The use of xanthone, fluorenone, p-aminobenzophenone, and methyl β-naphthyl ketone as sensitisers

3,4,5-Triphenylpyrazoles

Reduction products from cis- and trans-isocohumulone

Amino-acids and peptides. Part XIII. Syntheses of two fourteen-membered ring cyclotetrapeptides

The Shikimate pathway. Part III. The stereochemical course of the L-phenylalanine ammonia lyase reaction

An improved synthesis of substituted benzoyl acetates

Synthesis and photochemistry of 2,2′-distyrylbiphenyl and 2,2′-bis-(4-phenylbuta-1,3-dienyl)biphenyl

Structures of three C₃₂ triterpenoids from Neolitsea pulchella

Studies of heterocyclic compounds. Part IX. Formylation of 6a-thiathiophthens

Phenol oxidation. The formation of benzofuran and 2,3-dihydrobenzofuran derivatives by oxidation of 1-(2-hydroxyphenyl)-2-(4-hydroxyphenyl)ethanes

The structure and synthesis of a tetrahydro-β-carboline alkaloid from Phalaris arundinacea: some new tetrahydro-β-carbolines

The sulphur(II)–nitrogen bond. Part I. Reaction of alkanesulphenyl chlorides with secondary amines

1,2,3-Benzothiadiazoles. Part III. Nucleophilic substitution reactions in halogeno-1,2,3-benzothiadiazoles

6β-Bromoacetoxy-, 6β-chloroacetoxy-, and 6β-iodoacetoxy-3,5α-cyclo-5α-cholestane

Proton magnetic resonance spectra of some para-substituted derivatives of 9-phenylazojulolidine (9-phenylazo-2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizine)

The algar–flynn–oyamada oxidation of α-substituted chalcones

Total synthesis of polymethoxyoestrane compounds. Part I. Synthesis of (±)-2,3,4-trimethoxyoestra-1,3,5(10)-trien-17β-ol and related compounds

Total synthesis of polymethoxyoestrane compounds. Part II. Synthesis of (±)-2,4-dimethoxyoestra-1,3,5(10)-trien-17β-ol

The synthesis of vicinal trimethoxyoctahydrophenanthrene derivatives

Light-induced rearrangement of aryloxyacetonitriles

Polyhalogeno-aromatic compounds. Part XXI. A novel reagent system for the N-oxidation of weakly basic N-heteroaromatic compounds

The mechanism of the reaction between trialkyl phosphites and halogenoacetylenes

The gentamicin antibiotics. Part II. Separation and degradation of the gentamicin C components. The purpurosamines, a new class of naturally occurring 2,6-diaminomonosaccharides

Studies on the reaction of benzoyl peroxide with NN-disubstituted aromatic amines and related compounds. Part V. Preparation of 5,11-disubstituted 5,6,11,12-tetrahydrophenhomazines from α-diamines

The potential-controlled anodic oxidation of 1,2-dimethoxy-4-prop-1-enylbenzene

The biosynthesis of Lobelia alkaloids. Part II. The role of lobelanine in the biosynthesis of lobeline

Amino-acids and peptides. Part XXXIV. Anchimerically assisted coupling reactions: the use of 2-pyridyl thiolesters

Polypeptides. Part XII. The preparation of 2-pyridyl esters and their use in peptide synthesis

Terpenoids. Part XVIII. A common stereoelectronic requirement in epimerisations and retro-Dieckmann-type cleavages of some diterpene alcohols and ketones

Branched-chain sugars. Part XIII. Synthesis of 4′-O-methylapiin

A synthesis of 2-O-methyl-L-lyxose, a component of everninomicins B and D

Synthesis of exo- and endo-bicyclo[3,2,1]octane-2-carboxylic acids

Cyclisations via fluoride ion induced isomerisations: a route to some novel perfluoroheterocyclic compounds

Heterocyclic compounds from urea derivatives. Part XX. Adducts from carbonohydrazides and aroyl isothiocyanates and their cyclisation

Heterocyclic compounds from urea derivatives. Part XXI. Adducts from thiocarbonohydrazides and aroyl isothiocyanates and their cyclisation

Thermolysis of diazotetraphenylcyclopentadiene in the presence of amines

Preparation of 2,3,4-triphenylcyclopentadienylides

Calciferol and its relatives. Part XIII. Derivatives of enantiomeric 4-methylcyclohex-3-ene-1,trans-2-diols

Calciferol and its relatives. Part XIV. Total synthesis of des-AB-cholestane-8β,9α-diol ²{1β-[(1R)-1,5-dimethylhexyl]-7aβ-methyl-trans-perhydroindane-4β,5α-diol}

Calciferol and its relatives. Part XV. The preparation of des-AB-cholest-8-ene-8-carbaldehyde {1β-[(1R)-1,5-dimethylhexyl]-3aα,6,7,7aβ-tetrahydro-7aβ-methylindane-4-carbaldehyde} and 9α-chloro-des-AB-cholestan-8-one {5α-chloro-1β-[(1R)-1,5-dimethylhexyl]-7aβ-methyl-trans-perhydroindan-4-one}

Calciferol and its relatives. Part XVI. Total synthesis of precalciferol₃²

The copper–amine catalysed autoxidation of phenols. Part I

Pyrazines. Part III. Some nucleophilic substitution reactions of chloropyrazines

Pyrazines. Part IV. 2,6-Dihydroxy-3,5-diphenylpyrazine and related compounds

New metabolites of Gibberella fujikuroi. Part XVIII. 4bβ,7-Dihydroxy-1-methyl-8-methylenegibba-1,3,4a(10a)-trien-10-one

Substituted aminoacetamides by reaction of glyoxal with secondary amines

Naphthyridines. Part III. Preparation of pyrimido[1,2-a]- and imidazo-[1,2-a]-[1,8]naphthyridines from 2-amino-1,8-naphthyridines

Naphthyridines. Part IV. Preparation of anthyridines and pyrimido-[4,5-b][1,8]naphthyridines from 2-amino-1,8-naphthyridines

Transfer RNA components. Part II. Reactions of heavy metal salts of 2-thiouracil and a synthesis of 2-thiouridine

Catalysed isomerisation reactions of cyclododeca-1,5,9-triene

The synthesis and acid-catalysed rearrangements of 4-hydroxycyclohexa-2,5-dienones

Reactions of carbonyl compounds with tervalent phosphorus reagents. Part II. Alkyl benzoates

Studies of organophosphorochloridates. Part IV. Synthesis of N-substituted phosphoramidic hydrazides, hydrazones, and azides

Reactivity of vinyl sulphonic esters. Part VIII. Evidence for sulphur participation in the cyclisation of 2-arylthio-1,2-diphenylvinyl p-bromobenzenesulphonates from carbon-14 labelling experiments

Studies on heterocyclic chemistry. Part X. Synthesis of aziridin-2-ylphosphonates by the thermally induced isomerization of isoxazoles in trialkyl phosphites. A related reaction of 2H-azirine

Studies on heterocyclic chemistry. Part XI. Synthesis of 2,3-diaryl-3-hydroxyaminoaziridine-2-carboxamide

The reaction between 2,2-diarylchromens and 1,1-diarylethylenes

Organophosphorus chemistry. Part XII. Reactions of tetramethylbiphosphine and tetrakis(trifluoromethyl)biphosphine with olefins

Reactive intermediates. Part XV. Thermolysis of 1-(3,4-dihydro-4-oxoquinazolin-3-yl)-2-vinylaziridines. A new vinylaziridine rearrangement

Synthesis of capreomycidine and epicapreomycidine, the epimers of α-(2-iminohexahydropyrimid-4-yl)glycine

An efficient preparation of isocodeine from codeine

Studies of antihistaminics: dehydration of some substituted 4-aminobutan-2-ols

Substitution reactions of benzo[b]thiophen derivatives. Part II. Nitration and bromination of 2-bromo-3-methylbenzo[b]thiophen

Chemistry of cyanoacetylenes. Part X. Further studies on the reactions of cyano-ynamines with hydrogen halides and bromine

Amine oxidation. Part V. Reactions of some N-oxides, including heterocyclic-ring formation, with sulphur dioxide, acetic anhydride, and trifluoroacetic anhydride

2,3-Dihydro-3,6-dihydroxy-2-methyl-4-pyrone and curvularin from Penicillium gilmanii

Chemical constituents of the combretaceae. Part I. Substituted phenanthrenes and 9,10-dihydrophenanthrenes from the heartwood of Combretum apiculatum

4-Methyl-1-phenylpentane-1,3-dione and 2-isopropylchromone from the essential oil of Lophomyrtus bullata

Pharmacologically active 4-oxo-4H-chromen-2-carboxylic acids. Part III. Mechanistic aspects of the decomposition of ethyl 6-azido-4-oxo-4H-chromen-2-carboxylate

Photolysis of compounds containing an o-nitroarylthio-substituent

Claisen rearrangements of tropolone ethers. Part I

Cinnolines. Part XV. Methylation of methoxy- and alkyl-cinnolines and -4(1H)-cinnolones

Unsaturated compounds containing nitrogen. Part II. The preparation and thermal rearrangement of 1,4-diphenyl-1-thiocyanato-2,3-diazabuta-1,3-diene (α-thiocyanatobenzylidenehydrazonotoluene) and related reactions

Reaction of 1,1-diarylethylenes with tellurium halides

Triterpenoid constituents of Lycopodium phlegmaria L

Novel tricarbonyldieneiron complexes from the reaction of 2-bromobuta-1,3-diene with carbonylirons

Acylation of 2-amino-5,5-dimethyl-Δ¹-pyrroline 1-oxide

The gentamicin antibiotics. Part III. The gross structures of the gentamicin C components

Aryne chemistry. Part XXIX. Reactions of tetrahalogenobenzynes with bicyclo[2,2,1]heptene and bicyclo[2,2,1]heptadiene

Reaction of iodonium nitrate with some olefinic alcohols

The reactivity and the role of β-aryl-α-oxoglutaric acids in the oxidation of leucodrin and its derivatives by periodate

The sulphur(II)–nitrogen bond. Part II. The transamination of diamino sulphides and sulphenamides

Preparation and proton magnetic resonance spectra of the methyl ethers of 1,6-anhydro-β-D-glucopyranose

Further observations on the rearrangement of 3-acylaminoazetidinones

Action of base on non-enolisable carbonyl compounds. Part II. Cleavage of some anthraquinones

Preparation and reactions of triphenylarsonium cyclopentadienylide

3,5-Diphenyloxazolidin-2-one

Preparation and cyclisation of α-substituted β-(phenylthio)cinnamic acids

The Stobbe condensation. Part VIII. The cyclisation of trans-3-methoxycarbonyl-4-(2-thienyl)but-3-enoic acid and αβ-dithenylidene-succinic anhydride to the corresponding benzothiophen derivatives

The protoadamantane route to 1,2- and 2,4-disubstituted adamantanes

Cyclic organophosphorus compounds. Part XIII. Stereospecific formation of 4-substituted 1,3,2-dioxaphosph(V)orinans from bicyclic phosphorus(III) esters

The cyclisation of 4-phenoxybutyric acid

Synthetic analogues of polynucleotides. Part VII. Further syntheses of 5′-O-acryloylnucleosides and copolymers of these with other acryloyl compounds

Studies of heterocyclic compounds. Part X. 6a-Selenathiophthens

Arylsulphamoyl azides. An improved synthesis of chlorosulphonyl azide and its reaction with arylamines

The chemistry of indanones. Part I. The ring closure of 2-(4-methoxyphenyl)-3-(3-methoxyphenyl)propionic acid

Synthesis and fragmentation reactions of cyclic azo-compounds. Stereochemistry and transformations of photo-derived bicyclo[2,1,0]-pentanes, and thermal cycloreversion reactions of tricyclo[6,2,1,0^2,7]-undecatrienes and related compounds

Anodic oxidation of phenolic compounds. Part II. Products and mechanism of the anodic oxidation of hindered phenols

Aspects of isocoumarin chemistry. Part I. A synthesis of berbine derivatives

Quinazolines. Part XVIII. A second stereospecific cis-addition of the elements of nitromethane across a tetrasubstituted ethylenic double bond. A concerted mechanism for the reaction of nitroacetic acid with enamines

The synthesis of oligoribonucleotides. Part IX. Preparation of ribonucleoside 2′-acetal 5′-esters

Aminopyrrolo[1,2-c]pyrimidines. A novel ring cleavage

Reactions of arylcyclohexadienyl radicals: rearrangement versus fragmentation

Formation and rearrangement of 6,6-diphenylbicyclo[3,1,0]hex-2-ene

Syntheses of di-, tri-, and tetra-cyclopropylethylenes

Reductive acylation of 5-nitropyridines with anhydrides of acetic, phthalic, and succinic acids

Strecker degradation of α-amino-acids with benzil and with benzoin

1,2-Benzisothiazoles. Part I. Reaction of 3-chloro-1,2-benzisothiazole with nucleophiles

The photorearrangement of 6-acetoxy-3,5-bis(chloromethyl)-2,4,6-trimethylcyclohexa-2,4-dienone

Stereospecific photoisomerisations of 6-acetoxy-2,3,4,5,6-pentamethylcyclohexa-2,4-dienone

Stereoselective photochemical ring-opening of cyclohexa-2,4-dienones

Cyclic quaternary ammonium salts. Part IX. 1,1′-Azoimidazo[1,2-a]-pyridinium salts

Addition reactions of heterocyclic compounds. Part XLIV. The synthesis and photoisomerism of some quinolizine esters

Addition reactions of heterocyclic compounds. Part XLV. New azepines from substituted 2-methylquinolines and dialkyl acetylenedicarboxylates

Addition reactions of heterocyclic compounds. Part XLVI. Reactions of acetylenic esters with pyridines in the presence of proton donors, and with alkyl 3-(2-pyridyl)-trans-acrylates

Metallation of 1,3-bistrifluoromethylbenzene and NN-dimethyl-3,5-bistrifluoromethylaniline

Natural acetylenes. Part XXXIII. The biogenesis of the C₉ diacetylenic triol from the fungus Clitocybe rhizophora velen

1-Methylsulphonyl- and 1-phenylsulphonyl-indazolin-3-ones

Syntheses of a proerythrinadienone by phenolic oxidation and a morphinandienone system by a photo-pschorr reaction

A total synthesis of (±)-Kikemanine

Nitroxide radicals. Part XI. Polymerisation of t-butyl vinylphenyl nitroxides

Some thermal and photo-reactions of benzo- and naphtho-furandiones (coumarandiones)

γγ-Disubstituted itaconic acids. Part VI. The stobbe condensation of aryl cyclohexyl ketones and o-methylbenzophenone with dimethyl succinate

The boron trifluoride-catalysed reaction of furan derivatives with ethane-1,2-dithiol

Unsymmetrically disubstituted ferrocenes. Part XI. The effect of solvent and metallating agent on the lithiation of 2-ferrocenylpyridine

Aspects of tautomerism. Part III. A new dimerisation reaction of pseudo-acid chlorides

Friedel–Crafts acylations of aromatic hydrocarbons. Part XII. Acetylation and benzoylation of 1,4-dimethylnaphthalene and 1,2,3,4-tetramethylnaphthalene

Studies on the syntheses of heterocyclic compounds. Part CDXXI. General synthesis of 7,8-dioxygenated 1-benzyl-1,2,3,4-tetrahydroisoquinolines and elucidation of the structure of caseadine

Methylation of reducing carbohydrates. Permethylated derivatives of melibiose [O-α-D-galactopyranosyl-(1 → 6)-D-glucopyranose]

Substituted oxindoles. Part V. Synthesis and stereochemistry of some substituted 3-benzylidene-1-methylindol-2(3H)-ones

Photochemical reactions of chlorobenzene derivatives in benzene

Coumarin and related compounds. Part XIV. A novel 4-methoxy-1-naphthyl 4-methoxy-1-naphthylethyl ketone from the aluminium chloride-catalysed reaction of 1-methoxynaphthalene with acrylonitrile

Pinacol-type rearrangements in the phenylcyclohexane series: evidence for differences between the reaction mechanisms of epoxides and of the corresponding diols and halogenohydrins

The synthesis of neoclovene

Polyfluoroheterocyclic compounds. Part XXI. Thermal rearrangement of perfluoropyridazine and perfluoroalkylpyridazines to pyrimidines

Extractives from poisonous British plants. Part I. The structure of alpinumisoflavone, a new pyranoisoflavone from Laburnum alpinum J. Presl

Synthesis of peptides containing N-2-aminoethylglycine—‘reduction analogues’

Photodimerisation of 2-benzyl-5-p-bromobenzylidenecyclopentanone, a crystal–crystal transformation: X-ray study of the dimer

Abnormal addition of free radicals to sterically hindered nitrosobenzenes

Crystal and molecular structure of 1-methyl-2′-(p-tolylsulphonamido)-2-(p-tolylsulphonylimino)indoline-3-spirocyclopentane

Substitution reactions of benzo[b]thiophen derivatives. Part III. Nitration of benzo[b]thiophen-2-carboxylic acid and its 3-methyl derivative

Total syntheses of racemic fukinone and of natural (+)-hydroxyeremophilone.

Synthesis of[1-³H]ergosterol and [1-³H]ergocalciferol

Azonia-azulene salts. Part III. The thermal decomposition of o-benzylphenyl azides to give azepinoindoles

Azonia-azulene salts. Part IV. Attempts to convert dihydroindolizines into azonia-azulenes

Some addition reactions of 1,2,3,4,7,7-hexachloronorborna-2,5-diene, 1,4,5,6,7,7-hexachloronorborn-5-en-2-one, and related compounds

Formation of N-mono- and NN-di-benzoyl amines by benzoylation of phosphoramidate and related anions

Reaction products from αβ-unsaturated ketones and aliphatic diamines or dithiols

Photochemical synthesis at low temperatures. Part III. Ready synthesis of bicyclo[4,2,0]octan-2-ones from cyclohexenones and ethylene

Condensed thiophen ring systems. Part VII. Stability of 3-benzo[b]-thienyl-lithium

Synthesis of novel macrocyclic compounds containing sulphur or oxygen in the ring: thia- and oxa-cyclophanes. Mass spectral and other studies

Photolysis and rearrangement reactions of α-bromophenacyl 'onium salts

Bromomethyl 'onium salts

The reaction of 2-methyl-2-nitrosopropane and related species with organoboranes: a ready cis-elimination of alkene from trialkylboranes

The photosensitised decarboxylation of carboxylic acids by aromatic ketones

The photosensitised oxidation of amines. Part IV. The use of aromatic hydrocarbons as sensitisers

A search for 1,6-didehydro[10]annulenes as reactive intermediates

Studies in mycological chemistry. Part XXVII. Reinvestigation of the structure of purpurogenone, a metabolite of Penicillium purpurogenum Stoll

Studies in mycological chemistry. Part XXVIII. Isolation and structure of deoxypurpurogenone, a minor pigment of Penicillium purpurogenum Stoll

The bromination of some derivatives of resorcinol

Steroid boranes. Part IV. Hydroboration of a steroid olefin with asymmetric boranes

Compounds related to 1-hydroxymethylindane-2-carboxylic acid

o-Nitroaniline derivatives. Part II. Reactions of nucleophiles with N-benzylidene-o-nitroaniline

1-Phenethylisoquinoline alkaloids. Part II. The structures of alkaloids from Colchicum cornigerum(Sweinf.) Tackh. et Drar

The mass spectra of organomercury compounds

Dehydration of 4-hydroxy-2,3,4-triphenylcyclopent-2-enone

15H-cyclohepta[2,1-a:4,5-a′]dinaphthalen-15-one. The condensation of naphthalene-1,2-dicarboxylic anhydride with 2-naphthylacetic acid

Azabenzocycloheptenones. Part XIII. Ring expansion of 1,2-dihydroquinoline derivatives

Transformations of penicillin. Part I. Preparation and rearrangements of 6β-phenylacetamidopenicillanic sulphoxides

Synthesis of alkyl and aryl thiosulphenimides

Studies in the synthesis of camptothecin. An efficient synthesis of 2,3-dihydro-1H-pyrrolo[3,4-b]quinoline

¹H–¹H nuclear magnetic resonance decoupling by paramagnetic ion co-ordination at nitrogen

The chemistry of fungi. Part LIX. The synthesis of (±)-ascochitine

The chemistry of fungi. Part LX. The synthesis of tetrahydrosclerotioramine, tetrahydrosclerotoquinone, and tetrahydrosclerotiorin

The chemistry of fungi. Part LXI. The synthesis of (±)-sclerotiorin, of (±)-4,6-dimethylocta-trans-2,trans-4-dienoic acid, and of an analogue of rotiorin

The chemistry of fungi. Part LXII. The synthesis of (±)-mitorubrin, a metabolite of Penicillium rubrum

The chemistry of fungi. Part LXIII. Rubrorotiorin, a metabolite of Penicillium hirayamae Udagawa

The chemistry of fungi. Part LXIV. The structure of monascin: the relative stereochemistry of the azaphilones

The chemistry of fungi. Part LXV. The structures of ergochrysin A, isoergochrysin A, and ergoxanthin, and of secalonic acids A, B, C, and D

The chemistry of fungi. Part LXVI. A new synthesis of isoquinolines

Factors in the formation of isomerically and optically pure alkyl halides. Part VIII. Rearrangements in the reactions of branched-chain alcohols with boron trichloride and boron tribromide

Partially fluorinated heterocyclic compounds. Part IX. The syntheses of 4,5,6,7-tetrafluorobenzo[b]furan and 4,5,6,7-tetrafluoro-2-phenylbenzo[b]furan by a new cyclisation reaction, and the attempted syntheses of related compounds by conventional methods

New intermediates and dyestuffs for synthetic fibres. Part IV. 2-Nitronaphthalene-1,8-dicarboxylic anhydride

New intermediates and dyestuffs for synthetic fibres. Part V. By-products of the Ullmann condensation between 1-chloroanthraquinone and aniline

2,3,5,6-Tetrahydro- and 5,6-dihydro-imidazo[2,1-b]thiazoles from imidazoline-2-thiol derivatives and unsaturated or halogenated acids and esters

Approaches to heterocyclic analogues of biphenylene. Part II. Some 5,5′6,6′-tetraphenyl-2,2′-bipyrazinyls

trans-1,2-Dichlorocyclohexane from the interaction of benzenesulphonyl chloride and cyclohexene in the presence of aluminium chloride

Phosphorylation of diamines

Studies on the syntheses of heterocyclic compounds. Part CDXXXII. Synthesis of (±)-thalicsimidine by a possible biosynthetic route

Novel homophthalimide (isoquinoline-1,3-dione) derivatives obtained by addition–cyclisation reactions of nona-2,7-diynedioic acid derivatives with methylamine

The reactivity of pseudoaromatic compounds. Part III. Reactions of 2-lodo-, 2-bromo-, and 2-choloro-tropone with quinuclidine

Reactions of 2,2-dialkyl-1,2-dihydroquinolines. Part VI. Further bromination studies

Constitution and absolute configuration of meta,meta-bridged, strained biphenyls from Myrica nagi; X-ray analysis of 16-bromomyricanol

1,2,3-Benzothiadiazoles. Part IV. The rearrangement of diazonium salts derived from 7-aminobenzothiazoles

Dichloroketen adducts of 6,6-diphenylfulvene and 8,8-diphenylbenzofulvene

Reactions of the benzo[c]quinolizinium system

A selective bromination of aromatic amines

Circular dichroism of pyrrolizidine alkaloids and related compounds

Ring expansion of prophins with ethoxycarbonylnitrene

C-alkylation by 3-diazopropene, and the function of diazoalkanes as nitrogen bases

Reactions of cyclohexadienes. Part XII. Some dienamines and dimethyl acetylenedicarboxylate

Structures of some hexa-1,5-diene-1,1,3,3,4,4,6,6-octacarboxylic esters

Tetramethyl 2,2,4,4-tetramethoxycarbonylcyclobutane-1,3-dimalonate

Synthesis of porphin analogues containing furan and/or thiophen rings

Aromatic substitution of olefins. Part XVII. Reactions of ferrocene with olefins in the presence of palladium(II) salts

Syntheses of heterocyclic compounds. Part XXIV. Cyclisation studies with ortho-substituted arylcarbene and arylnitrene precursors

Analysis of structural characteristics of chemical compounds in a large computer-based file. Part II. Atom-centred fragments

6-Alkyl derivatives of 3-(3,4-dihydroxyphenyl)alanine (dopa). Part I. Synthesis via oxazolinones

The chemistry of nitro-compounds. Part I. Acid-catalysed ring-opening reactions of substituted o-nitrophenylethylene oxides involving participation by the nitro-group

The aluminium chloride-catalysed decomposition of some N-(3-bromopropyl)arylamines

Polycyclic aromatic compounds. The conversion of 1,1,4-triarylbuta-1,3-diene-2,3-dicarboxylic anhydrides and 1,4-diarylnaphthalene-2,3-dicarboxylic anhydrides into polycyclic compounds

Pteridine studies. Part XLI. New routes to 4-aminopteridines via 3-(dimethylaminomethyleneamino)pyrazine-2-carbonitrile and related compounds

An alternative synthesis of 2β,3β,14α,17β-tetrahydroxy-5β-androst-7-en-6-one

Chemical modification of trehalose. Part IX. The monobenzylidene acetal

Cyano-13-epicobalamin (neovitamin B₁₂) and its relatives

Synthesis and mass spectra of some 3-acylamino-2-piperidones

Light-induced and related reactions of quinones. Part VIII. Some (2-hydroxyalkyl)-, phenethyl-, (2-ethoxycarbonylethyl)-, and styryl-1,4-benzoquinones

The total synthesis of a nuclear analogue of the penicillin—cephalosporin antibiotics

Syntheses of L-vallarose (6-deoxy-3-O-methyl-L-altrose) and D-digitalose (6-deoxy-3-O-methyl-D-galactose)

Hypoiodite reaction: the decomposition of oxalic acid half-esters

Reactions of arenesulphonyl azides with some di- and tri-substituted indoles

Alkaloids of daphnandra species. Part X. The structure of isotenuipine

The reactions of 1,3-diphenylalk-1-enes with butyl-lithium

Extractives from Guttiferae. Part XXI. The isolation and structure of nine coumarins from the bark of Mammea africana G. Don

Extractives from Guttiferae. Part XXII. The isolation and structure of four novel biflavanones from the heartwoods of Garcinia buchananii Baker and G. eugeniifolia Wall

Extractives from Guttiferae. Part XXIII. An unambiguous synthesis of 6-deoxyjacareubin and related 3,3- and 1,1-dimethylallyl and annulated xanthones

Chemistry of hop constituents. Part XXXVIII. Alkenylation of 2-acylcyclohexane-1,3,5-triones and further evidence concerning the fine structure of hop β-acids

Studies on the syntheses of heterocyclic compounds. Part CDXLIII. An alternative synthesis of (±)-glaziovine by photolysis and phenolic oxidation

Metallation reactions. Part X. Allylic metallation in the presence of amide groups: long range interactions

Dimethylcarbodi-imide. Improved synthesis, cyclic trimer, and reaction with α-hydroxy-esters

Polyfluoroalkyl derivatives of nitrogen. Part XXX. Reaction of N-chlorobistrifluoromethylamine with propene and vinyl fluoride and of N-iodobistrifluoromethylamine with vinyl fluoride under ionic conditions

Polyfluoroalkyl derivatives of nitrogen. Part XXXI. Reaction of N-chloro- and N-lodo-bistrifluoromethylamine with hexafluoropropene, trifluoroethylene, and vinyl fluoride under radical conditions

Organosilicon chemistry. Part VII. Reactions of bis(trimethylsilyl)-mercury with perfluoro-olefins and -acetylenes

Nuclear magnetic resonance decoupling by paramagnetic ion co-ordination at oxygen

Seco-steroids. Part I. Some 2-(2-hydroxyethyl)cyclopentanols

The chemistry of santonene. Part VII. The action of phosphorus trihalides on the santonins, santonene, and related compounds

Organic reactions in melts and solids. Part VIII. Reactions of diacylanilines with monobasic and dibasic carboxylic acids

Studies related to penicillins. Part V. The conversion of 6β-phthalimidopenicillanic acid into cepham derivatives

Studies related to penicillins. Part VI. The conversion of penicillin V and 6-aminopenicillanic acid into cepham derivatives

The sulphur(II)–nitrogen bond. Part III. The synthesis of the sulphur-(II)–nitrogen bond from sulphenates

Bromination of pyrrolo[1,2-c]pyrimidines

The action of cyanamide on 1,3,4-oxadiazolium and pyrylium salts

Reaction of 4-benzylidene-1-butylpyrrolidine-2,3-diones with aromatic thiols and amines

Reactions of nickel 1,19-dimethyltetradehydrocorrin salts

Antibiotic 1233A: a fungal β-lactone

Acenaphthene. Part II. The preparation of 3,4-diaminonaphthalene-1,8-dicarboxylic anhydride (3,4-diaminonaphthalic anhydride) and derivatives

Reactions of 3,3,4,4-tetrafluorohexa-1,5-diene. Part I. Cycloadditions with tetrafluoroethylene and chlorotrifluoroethylene

Studies in mycological chemistry. Part XXIX. Total synthesis of (±)-O-methylaversin [(±)-tri-O-methylversicolorin B]: the structure of aversin

1,2-Benzisothiazoles. Part II. Reactions of 3-chloro-1,2-benzisothiazole with carbanions

The π-route to substituted adamantanes. Part I

Organometallic diazoalkanes. Part II. Heterocyclic syntheses with the co-ordinated ligand CN₂^2–; reactions of trimethylstannyl- and trimethylsilyl-diazoalkanes

5α-Cholestano[7,6-c]pyrazole derivatives

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Enol elimination reactions. Part IV. Some improvements to the synthesis of conjugated acetylenic acids

Content Provider	Royal Society of Chemistry (RSC)
Author	Owen, C. R. Fleming, Ian
Copyright Year	1971
Abstract	The reaction of the enolates (2) of acylmalonates with arenesulphonyl halides gives enol sulphonates in poor yield, partly because of competing halogenation which gives α-halogeno-ketones (6). The halogenation is reversible, and, because the reverse reaction leads to re-establishment of the original sulphonation conditions, it is possible to make enol sulphonates from the reaction of an α-halogeno-ketone with an arenesulphinate ion. This reaction is the sulphur equivalent of the Perkow reaction, but it is not preparatively useful. The halogenation reaction can be avoided altogether by using arenesulphonic anhydrides as sulphonating agents. The result is that the synthetic sequence: acylmalonate → enol sulphonate → acetylenic acid is now a useful one for the synthesis of conjugated acetylenic acids. For some purposes the use of t-butyl esters in place of ethyl esters has advantages.
Starting Page	2013
Ending Page	2017
Page Count	5
File Format	PDF
ISSN	00224952
Volume Number	0
Journal	Journal of the Chemical Society C: Organic
DOI	10.1039/J39710002013
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Perkow reaction Carboxylic acid Enol Halogenation Ion Nucleophile
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry

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