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General base catalysis in the decomposition of N-Cl-Valine in aqueous solution

✍ Scribed by Ll Abia; X. L. Armesto; M. Canle L.; M. V. García; M. Losada; J. A. Santaballa

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
565 KB
Volume
26
Category
Article
ISSN
0538-8066

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✦ Synopsis

This article analyzes the kinetics of the decomposition of N-C1-Valine in aqueous solution, which is formed rapidly by chlorination of Valine with sodium hypochlorite. A general-base catalyzed process not yet described is reported. The experimental evidence shows two competitive decomposition paths: an unimolecular concerted fragmentation process (k = (1.8 ? 0.1) .

s-l at 298 K) and the other one is an E2 elimination process whose importance increases with pH and depends on the nature and the concentration of the bases present in the medium.

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