Kinetics and Mechanistic Oxidation of l-Leucine and l-Valine by 1,3-Dichloro-5,5-dimethylhydantoin in Aqueous Acetic Acid Medium

Shweta Neeraj; S.S. Parihar; A.P. Dwivedi

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International Journal of Advanced Research in Chemical Science

Volume 5, Issue 3, 2018, Page No: 25-30

Kinetics and Mechanistic Oxidation of l-Leucine and l-Valine by 1,3-Dichloro-5,5-dimethylhydantoin in Aqueous Acetic Acid Medium

Shweta Neeraj¹,S.S.Parihar¹,A.P.Dwivedi¹

Department of Chemistry, Govt. Girls P.G. College (NAAC) Rewa-486001 (M.P.) India 2Department of chemistry, Govt. Sanjay Gandhi Smrati Auto., P.G., College Sidhi M.P India.

Citation : Shweta Neeraj,S.S.Parihar,A.P.Dwivedi, Kinetics and Mechanistic Oxidation of l-Leucine and l-Valine by 1,3-Dichloro-5,5-dimethylhydantoin in Aqueous Acetic Acid Medium International Journal of Advanced Research in Chemical Science 2018, 5(3) : 25-30

Abstract

The kinetics of oxidation of laevo-Leucine and laevo-Valine essential amino acids [AA] have been investigated by 1,3-dichloro-5,5-dimethylhydantoin (DCDMH) in aqueous acetic acid medium in presence of mineral acid. The observed rate of oxidation is first-order with respect to [AA], and [DCDMH]. The rate of reaction is catalysed by [H⁺] ion. The rate of oxidation increases with rise in percentage of solvent composition. The reaction fails to initiate polymerization with added monomer acrylonitrile and free radical mechanism is discorded. The stoichiometric ratio 1:1 of the reaction yields corresponding aldehyde as a main product of oxidation. The thermodynamic parameters have been evaluated and reaction constants involved in the probable mechanism was derived in consonance with the kinetic findings.

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