NDLI: Neighbouring group participation of thiol through aldehyde group assisted thiolysis of active ether: ratiometric and vapor phase fast detection of hydrogen sulfide in mixed aqueous media

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Neighbouring group participation of thiol through aldehyde group assisted thiolysis of active ether: ratiometric and vapor phase fast detection of hydrogen sulfide in mixed aqueous media

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New Journal of Chemistry Vol - 39 Issue - 6

New Journal of Chemistry Vol - 39 Issue - 5

New Journal of Chemistry Vol - 39 Issue - 4

New Journal of Chemistry Vol - 39 Issue - 3

New Journal of Chemistry Vol - 39 Issue - 2

New Journal of Chemistry Vol -29

New Journal of Chemistry Vol -0

Neighbouring group participation of thiol through aldehyde group assisted thiolysis of active ether: ratiometric and vapor phase fast detection of hydrogen sulfide in mixed aqueous media

Content Provider	Royal Society of Chemistry (RSC)
Author	Fun, Hoong-Kun Goswami, Shyamaprosad Quah, Ching Kheng Das, Avijit Kumar
Copyright Year	2015
Abstract	The “Addition–NGP (neighbouring group participation)–Elimination” technique has been used for the ratiometric sensing of H2S/HS−. We report herein the sensing of H2S by the nucleophilic addition of H2S/HS− to a –CHO group of R1 adjacent to naphthyl hydroxyl followed by NGP of thiol through a probable six-membered transition state that undergoes the cleavage of the dinitrophenyl ether moiety. In contrast, R2 undergoes a probable addition and elimination mechanism forming a Meisenheimer complex, which also cleaves the ether moiety. However, herein, the reaction is very slow compared to R1, which works through NGP. The probe can be highly promising for selectivity and sensitivity, to detect H2S/HS− with rapid response (<3 min) and it opens a new way for the thiolysis of the ortho-hydroxy aldehyde platform by cleavage of an active ether linkage. Test strips based on R1 were fabricated, which could act as a convenient and efficient H2S/HS− test kit to detect H2S/HS− in an aqueous solution and in a solid phase for practical application.
Starting Page	5669
Ending Page	5675
Page Count	7
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	39
Issue Number	7
Journal	New Journal of Chemistry
DOI	10.1039/c5nj00689a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Hydrogen sulfide Test cricket Neighbouring group participation Hydroxy group Thiol Ether NGP Thiolysis Aldehyde Meisenheimer complex Nucleophilic addition
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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