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A kinetic study of the oxidation of α-hydroxy acids and α-hydroxy ketones by potassium bromate

✍ Scribed by R. Natarajan; N. Venkatasubramanian

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
346 KB
Volume
8
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

The oxidation of α‐hydroxy acids and α‐hydroxy ketones by Br(V) follows the rate‐law

However, the former reaction exhibits a second‐order dependence on hydrogen ion concentration while the latter reaction has a third‐order dependence. A mechanism involving a slow formation of a bromate ester of the α‐hydroxy acid followed by a fast decomposition is proposed. A rate‐determining formation of a bromate ester from the conjugate acid of benzoin, followed by a rapid decomposition of the bromate ester, explains the kinetic data for the oxidation of benzoin.

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