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Title: Kinetics and mechanism of the oxidation of methionine by benzyltrimethylammonium tribromide
Authors: Goyal, Archana
Kothari, Seema
Issue Date: Sep-2003
Publisher: NISCAIR-CSIR, India
Abstract: The oxidation of methionine (MTN) hy henzyltrimethylammonium tribromide (BTMAB), in 1:1 aqueous acetic acid, leads to the formation of the corresponding sulphoxide. The reaction is first order with respect to each the methionine and BTMAB. The oxidation of MTN in an atmosphere of nitrogen, failed to induce the polymerization of acrylonitrile. An addition of benzyltrimethylammonium chloride has no effect on the rate of oxidation. The rates of oxidation were determined at different temperatures and the activation parameters were calculated. The reaction rate increases with an increase in the polarity of the medium. Tribromide ion is postulated as the reactive oxidizing species. Suitable mechanism for the reaction is postulated.
Page(s): 2129-2132
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.42B(09) [September 2003]

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