Kinetics of Oxidation of Amino Acids by a Newly Synthesized Oxidant, N-Chloropyrazinamide in Aqueous Acetic Acid Medium

Vaijayanthi, S. Parimala; Mathiyalagan, N.

doi:10.18052/www.scipress.com/ILCPA.16.1

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Kinetics of Oxidation of Amino Acids by a Newly Synthesized Oxidant, N-Chloropyrazinamide in Aqueous Acetic Acid Medium

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Abstract:

The kinetics of oxidation of amino acids namely, alanine, glycine, leucine, phenyl alanine and valine by N-chloropyrazinamide (NCPZA) in aqueous acetic acid medium in the presence of hydrochloric acid have been investigated. The observed rate of oxidation is first order in [NCPZA], [H+] and [Clˉ]. The order with respect to [amino acid] is zero. The rate of oxidation increases with increase in the percentage of acetic acid. The reaction rate increases slightly with increase in ionic strength, while retards with addition of pyrazinamide. Arrhenius and thermodynamic activation parameters have been evaluated from Arrhenius plot by studying the reaction at different temperatures. A most probable reaction mechanism has been proposed and an appropriate rate law is deduced toaccount for the observed kinetic data.

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Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 16)

Pages:

1-8

DOI:

https://doi.org/10.18052/www.scipress.com/ILCPA.16.1

Citation:

S. P. Vaijayanthi and N. Mathiyalagan, "Kinetics of Oxidation of Amino Acids by a Newly Synthesized Oxidant, N-Chloropyrazinamide in Aqueous Acetic Acid Medium", International Letters of Chemistry, Physics and Astronomy, Vol. 16, pp. 1-8, 2013

Online since:

August 2013

Authors:

S. Parimala Vaijayanthi, N. Mathiyalagan

Keywords:

Amino Acids, Kinetics, Mechanism, N-Chloropyrazinamide, Oxidation

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