Kinetics and mechanism of oxidation of some thioacids by quinolinium fluorochromate

Authors
Khurana, M Sharma, PK Banerji, KK
Citation
M. Khurana et al., Kinetics and mechanism of oxidation of some thioacids by quinolinium fluorochromate, I J CHEM A, 37(11), 1998, pp. 1011-1015
Citations number
10
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
37
Issue
11
Year of publication
1998
Pages
1011 - 1015
Database
ISI
SICI code
0376-4710(199811)37:11<1011:KAMOOO>2.0.ZU;2-8
Abstract
The oxidation of thioglycollic, thiolactic and thiomalic acids by quinolini um fluorochromate (QFC) is first order in QFC. The reaction exhibits Michae lis-Menten type of kinetics with respect to the thioacid. The reaction is c atalyzed by hydrogen ions. The hydrogen ion dependence has the form: k(obs) . = a + b [H+]. The oxidation of thiolactic acid has been studied in 19 org anic solvents. The solvent effect has been analysed using Kamlet's and Swai n's multiparametric equations. A mechanism involving the formation of a thi oester and its decomposition in the slow step has been proposed.