NDLI: ESIMS Studies and Calculations on Alkali-Metal Adduct Ions of Ruthenium Olefin Metathesis Catalysts and Their Catalytic Activity in Metathesis Reactions

Please wait, while we are loading the content...

Year: 2017 Volume: 23

Year: 2016 Volume: 22

Year: 2015 Volume: 21

Year: 2014 Volume: 20

Year: 2013 Volume: 19

Year: 2012 Volume: 18

Year: 2011 Volume: 17

Year: 2010 Volume: 16

Year: 2009 Volume: 15

Year: 2009 Volume: 15 Issue: 48

Year: 2009 Volume: 15 Issue: 47

Year: 2009 Volume: 15 Issue: 46

Year: 2009 Volume: 15 Issue: 45

Year: 2009 Volume: 15 Issue: 44

Year: 2009 Volume: 15 Issue: 43

Year: 2009 Volume: 15 Issue: 42

Year: 2009 Volume: 15 Issue: 41

The Stereospecific Ligand Exchange at a Pseudo-Benzylic T-4 Iridium Centre in Planar-Chiral Cycloiridium $(η^{6}-Arene)tricarbonylchromium$ Complexes

Shape, Size, and Phase-Controlled Rare-Earth Fluoride Nanocrystals with Optical Up-Conversion Properties

From Racemic Compound to Spontaneous Resolution: A Linker-Imposed Evolution of Chiral $[MnMo_{9}O_{32}]^{6−}-Based$ Polyoxometalate Compounds

Mechanism of Electrocyclic Ring-Opening of Diphenyloxirane: 40 Years after Woodward and Hoffmann

Highly Enantioselective Conjugate Additions of Phosphites to α,β-Unsaturated N-Acylpyrroles and Imines: A Practical Approach to Enantiomerically Enriched Amino Phosphonates

A Mechanism of Adsorption of β-Nicotinamide Adenine Dinucleotide on Graphene Sheets: Experiment and Theory

High-Affinity Inhibitors of tRNA-Guanine Transglycosylase Replacing the Function of a Structural Water Cluster

Vinylation of Nitro-Substituted Indoles, Quinolinones, and Anilides with Grignard Reagents

Synthesis and Characterisation of a New Series of Bistable Iron(II) Spin-Crossover 2D Metal–Organic Frameworks

Crown-Ether-Like $Pb^{II}-Metal$ Framework with Dual- and Bimodal Emissive Properties Based on Its Photochromic Precursor by Leaching

In-Situ Encapsulation of Nickel Particles in Electrospun Carbon Nanofibers and the Resultant Electrochemical Performance

$Pd^{II}-Catalyzed$ Condensation of a Mononuclear Pt–Nucleobase Complex to Its Head–Tail Dimer: Characterization of a Key Intermediate and an End Product

Synthesis, Structure, and Highly Efficient Copper-Catalyzed Aziridination with a Tetraaza-Bispidine Ligand

Stabilisation of Peptide foldamers in an aqueous medium by incorporation of azapeptide building blocks.

N-Fusion Approach in Construction of Contracted Carbaporphyrinoids: Formation of N-Fused Telluraporphyrin

Low-Concentration 1,2-trans β-Selective Glycosylation Strategy and Its Applications in Oligosaccharide Synthesis

Propene Oxidation with the Anionic Cluster $V_{4}O_{11}^{−}:$ Selective Epoxidation

Bifunctional Heterogeneous Catalysis of Silica–Alumina-Supported Tertiary Amines with Controlled Acid–Base Interactions for Efficient 1,4-Addition Reactions

Multi-Product Classes Obtained from Allylation of α-Halo Ketones with Allylzinc Bromide

Catalytic Activity Dependency on Catalyst Components in Aerobic Copper–TEMPO Oxidation

Isoquinolinium Salts from o-Halobenzaldehydes, Amines, and Alkynes Catalyzed by Nickel Complexes: Synthesis and Applications

Gold-Catalyzed Intermolecular Addition of Carbonyl Compounds to 1,6-Enynes: Reactivity, Scope, and Mechanistic Aspects

Theoretical Insights on Methylbenzene Side-Chain Growth in ZSM-5 Zeolites for Methanol-to-Olefin Conversion

The Influence of N-Heterocyclic Carbenes (NHC) on the Reactivity of $[Ru(NHC)_{4}H]^{+}$ With $H_{2},$ $N_{2},$ CO and $O_{2}$

Synthesis, X-ray Structure of Ferrocene Bearing Bis(Zn-cyclen) Complexes and the Selective Electrochemical Sensing of TpT

Structural Tracking of the Potassium-Mediated Magnesiation of Anisole

Theoretical Study on the Role of Surface Basicity and Lewis Acidity on the Etherification of Glycerol over Alkaline Earth Metal Oxides

ESIMS Studies and Calculations on Alkali-Metal Adduct Ions of Ruthenium Olefin Metathesis Catalysts and Their Catalytic Activity in Metathesis Reactions

Electronic Structure and Redox Properties of Metal Nitride Endohedral Fullerenes $M_{3}N@C_{2n}$ (M=Sc, Y, La, and Gd; 2n=80, 84, 88, 92, 96)

A New Cyanofluorene–Triphenylamine Copolymer: Synthesis and Photoinduced Intramolecular Electron Transfer Processes

Homoleptic Organoderivatives of High-Valent Nickel(III)

Rhodamine Spiroamides for Multicolor Single-Molecule Switching Fluorescent Nanoscopy

Red- and Green-Emitting Iridium(III) Complexes for a Dual Barometric and Temperature-Sensitive Paint

Fullerol–Titania Charge-Transfer-Mediated Photocatalysis Working under Visible Light

Designing Simple Tridentate Ligands for Highly Luminescent Europium Complexes

Novel oxygenations with IBX.

Trapping Reactive Metal–Carbene Complexes by a Bis-Pocket Porphyrin: X-ray Crystal Structures of $RuCHCO_{2}Et$ and trans-[Ru(CHR)(CO)] Species and Highly Selective Carbenoid Transfer Reactions

The $^{3}[ndσ*(n+1)pσ]$ Emissions of Linear Silver(I) and Gold(I) Chains with Bridging Phosphine Ligands

Soft-Chemical Exfoliation Route to Layered Cobalt Oxide Monolayers and Its Application for Film Deposition and Nanoparticle Synthesis

Catalytic Carbanion Reactions: Formation and Reaction of Carbanions from Ester or Amide Equivalents Using Catalytic Amounts of Bases

Year: 2009 Volume: 15 Issue: 40

Year: 2009 Volume: 15 Issue: 39

Year: 2009 Volume: 15 Issue: 38

Year: 2009 Volume: 15 Issue: 37

Year: 2009 Volume: 15 Issue: 36

Year: 2009 Volume: 15 Issue: 35

Year: 2009 Volume: 15 Issue: 34

Year: 2009 Volume: 15 Issue: 33

Year: 2009 Volume: 15 Issue: 32

Year: 2009 Volume: 15 Issue: 31

Year: 2009 Volume: 15 Issue: 30

Year: 2009 Volume: 15 Issue: 29

Year: 2009 Volume: 15 Issue: 28

Year: 2009 Volume: 15 Issue: 27

Year: 2009 Volume: 15 Issue: 26

Year: 2009 Volume: 15 Issue: 25

Year: 2009 Volume: 15 Issue: 24

Year: 2009 Volume: 15 Issue: 23

Year: 2009 Volume: 15 Issue: 22

Year: 2009 Volume: 15 Issue: 21

Year: 2009 Volume: 15 Issue: 20

Year: 2009 Volume: 15 Issue: 19

Year: 2009 Volume: 15 Issue: 18

Year: 2009 Volume: 15 Issue: 17

Year: 2009 Volume: 15 Issue: 16

Year: 2009 Volume: 15 Issue: 15

Year: 2009 Volume: 15 Issue: 14

Year: 2009 Volume: 15 Issue: 13

Year: 2009 Volume: 15 Issue: 12

Year: 2009 Volume: 15 Issue: 11

Year: 2009 Volume: 15 Issue: 10

Year: 2009 Volume: 15 Issue: 9

Year: 2009 Volume: 15 Issue: 8

Year: 2009 Volume: 15 Issue: 7

Year: 2009 Volume: 15 Issue: 6

Year: 2009 Volume: 15 Issue: 5

Year: 2009 Volume: 15 Issue: 4

Year: 2009 Volume: 15 Issue: 3

Year: 2009 Volume: 15 Issue: 2

Year: 2009 Volume: 15 Issue: 1

Year: 2008 Volume: 14

Year: 2007 Volume: 13

Year: 2006 Volume: 12

Year: 2005 Volume: 11

Year: 1997 Volume: 3

ESIMS Studies and Calculations on Alkali-Metal Adduct Ions of Ruthenium Olefin Metathesis Catalysts and Their Catalytic Activity in Metathesis Reactions

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Yim, Wai-leung Klüner, Thorsten Metzger, Jürgen O. Wang, Hao-yang
Description	Author Affiliation: Wang HY ( Institute of Pure and Applied Chemistry, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany.)
Abstract	Electrospray ionization mass spectrometry (ESIMS) and subsequent tandem mass spectrometry (MS/MS) analyses were used to study some important metathesis reactions with the first-generation ruthenium catalyst 1, focusing on the ruthenium complex intermediates in the catalytic cycle. In situ cationization with alkali cations $(Li^{+},$ $Na^{+},$ $K^{+},$ and $Cs^{+})$ using a microreactor coupled directly to the ESI ion source allowed mass spectrometric detection and characterization of the ruthenium species present in solution and particularly the catalytically active monophosphine–ruthenium intermediates present in equilibrium with the respective bisphosphine–ruthenium species in solution. Moreover, the intrinsic catalytic activity of the cationized monophosphine–ruthenium complex $1 a⋅K^{+}$ was directly demonstrated by gas-phase reactions with 1-butene or ethene to give the propylidene Ru species $3 a⋅K^{+}$ and the methylidene Ru species $4 a⋅K^{+},$ respectively. Ring-closing metathesis (RCM) reactions of 1,6-heptadiene (5), 1,7-octadiene (6) and 1,8-nonadiene (7) were studied in the presence of KCl and the ruthenium alkylidene intermediates 8, 9, and 10, respectively, were detected as cationized monophosphine and bisphosphine ruthenium complexes. Acyclic diene metathesis (ADMET) polymerization of 1,9-decadiene (14) and ring-opening metathesis polymerization (ROMP) of cyclooctene (18) were studied analogously, and the expected ruthenium alkylidene intermediates were directly intercepted from reaction solution and characterized unambiguously by their isotopic patterns and ESIMS/MS. ADMET polymerization was not observed for 1,5-hexadiene (22), but the formation of the intramolecularly stabilized monophosphine ruthenium complex 23 a was seen. The ratio of the signal intensities of the respective with potassium cationized monophosphine and bisphosphine alkylidene Ru species varied from $[I_{4a}]/[I_{4}]=0.02$ to $[I_{23a}]/[I_{23}]=10.2$ and proved to be a sensitive and quantitative probe for intramolecular π-complex formation of the monophosphine–ruthenium species and of double bonds in the alkylidene chain. MS/MS spectra revealed the intrinsic metathesis catalytic activity of the potassium adduct ions of the ruthenium alkylidene intermediates 8 a, 9 a, 10 a, 15 a, and 19 a, but not 23 a by elimination of the respective cycloalkene in the second step of RCM. Computations were performed to provide information about the structures of the alkali metal adduct ions of catalyst 1 and the influence of the alkali metal ions on the energy profile in the catalytic cycle of the metathesis reaction.
ISSN	09476539
e-ISSN	15213765
Journal	Chemistry - A European Journal
Issue Number	41
Volume Number	15
Language	English
Publisher	Wiley-VCH;ChemPubSoc Europe
Publisher Date	2009-10-19
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Catalysis

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in