Kinetics and Mechanism of the Oxidation of DL-Methionine by Tetrakis(Pyridine)silver Dichromate

被引：1

作者：

Patel, M. ^{[1
]}

Mathur, L. ^{[1
]}

Jha, K. ^{[2
]}

Kothari, A. ^{[1
]}

Shastri, I. ^{[2
]}

Sharma, Pradeep K. ^{[1
]}

机构：

[1] Jai Narain Vyas Univ, Dept Chem, Jodhpur 342005, Rajasthan, India

[2] RD Natl Coll, Dept Chem, Bombay 400050, Maharashtra, India

来源：

ASIAN JOURNAL OF CHEMISTRY | 2013年 / 25卷 / 05期

关键词：

Dichromate; Kinetics; Mechanism; Methionine; Oxidation; TETRAETHYLAMMONIUM CHLOROCHROMATE; PYRIDINIUM BROMOCHROMATE; REACTIVITY; ALPHA;

D O I：

10.14233/ajchem.2013.13887

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The oxidation of methionine by tetrakis(pyridine)silver dichromate in dimethyl sulphoxide leads to the formation of corresponding sulphoxide. The reaction is of first order with respect to tetrakis(pyridine)silver dichromate. Michaelis-Menten type kinetics was observed, with respect to methionine. The reaction is catalyzed by hydrogen ions. The hydrogen-ion dependence has the form: k(obs) = a,+ b [H+]. The oxidation of methionine was studied in 19 different organic solvents. The Solvent effect was analyzed by Kamlet's and Swain's multiparametric, equations. Solvent,effect indicated the importance of the cation-solvating power of the solvent A. suitable mechanism has also been postulated.

引用

页码：2779 / 2782

页数：4

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