Section A : chemical science volume 1 issue 1 jcbsc.org/admin/get_filechem.php?id=5 Paper Title: Kinetics and mechanism of oxidation of some thioacids by imidazolium fluorochromate Authors Name: Mamta Gilla, A. Meenaa, A. Choudhary, M. Baghmar, I.K Sharma, L. Kotaic and Vinita Sharma Abstract: Oxidation of thioglycollic, thiolactic and thiomalic acids by imidazolium fluorochromate (IFC) in dimethylsulphoxide (DMSO) leads to the formation of disulphide dimmers. The reaction is first order in IFC. Michaelies-Menten type of kinetics is observed with respect to the thioacids. Reaction is failed to induce the polymerisation of acrylonitrile. The reaction is catalysed by hydrogen ions. The hydrogen ion dependence has taking the form kobs = a + b [H+]. The oxidation of thiolactic acid has been studied in nineteen different organic solvents. The solvent effect has been analysed by using Kamlet’s and Swain’s multiparametric equations. A mechanism involving the formation of a thioester and its decomposition in slow step has been proposed.
Posted on: Sat, 04 Oct 2014 08:26:39 +0000
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