## Abstract Pseudo‐first‐order rate constants have been determined for the nucleophilic substitution reactions of __p__‐nitrophenyl acetate with __p__‐chlorophenoxide (4‐ClC~6~H~4~O^−^) and __N__‐phenylbenzohydroxamate (C~6~H~5~CON(C~6~H~5~)O^−^) ions in phosphate buffer (pH 7.7) at 27°C. The effec
Kinetic study of the reactions of p-nitrophenyl acetate and p-nitrophenyl benzoate with oximate nucleophiles
✍ Scribed by Shuchi Tiwari; Sancheeta Kolay; Kallol K. Ghosh; Kamil Kuca; Jan Marek
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 128 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
Abstract
The reactions of p‐nitrophenyl acetate (PNPA) and p‐nitrophenyl benzoate (PNPB) with α‐nucleophile oximates, that is, butane 2,3‐dione monoximate, pralidoximate, and other oximates have been studied in the presence of different cationic surfactants. The first‐order rate constant increases with increasing surfactant concentration. The extent of acceleration is dependent on the head group structure of surfactants. The PNPA is more reactive than PNPB toward all the nucleophiles at higher concentration of surfactants. © 2008 Wiley Periodicals, Inc. Int J Chem Kinet 41: 57–64, 2009
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