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Oxidation of thioacids by quinaldinium fluorochromate

By Krishnamoorthy Guna Sekar and Seplappatty Kalimuthu Periyasamy


The kinetics of oxidation of thioglycolic, thiolactic and thiomalic acids by quinaldinium fluorochromate [QnFC] has been studied in non aqueous medium. The oxidation kinetics was followed spectrophotometrically in the temperature range of 30–60 °C. The reaction shows unit order dependence each with respect to substrate and oxidant. The reaction is catalysed by hydrogen ions. The hydrogen ion dependence takes the form kobs = a + b [H+]. The reaction rate decreases with increasing the concentration of Mn2+ ions. The reaction does not induce polymerization of acrylonitrile. A plausible mechanism has been proposed for the formation of a thioester and its decomposition which occur in the slow step

Topics: Kinetics, Oxidation, Thioacids, Quinaldinium fluorochromate, Chemistry, QD1-999
Publisher: Elsevier
Year: 2016
DOI identifier: 10.1016/j.arabjc.2013.11.022
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