Electrochemical Oxidation of Catechols in the Presence of Triethyl Phosphite |
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Authors: | Seyed Mohammad Shoaei Hossein Aghaei Majid Monajjemi Mehran Aghaei |
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Institution: | 1. Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, IranS_mohammadshoaei@yahoo.com;3. Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran;4. Faculty of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran |
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Abstract: | The mechanism of electrochemical oxidation of catechol and some of its derivatives have been studied in the presence of triethyl phosphite as a nucleophile in aqueous solution. Voltammetric studies indicate that the quinones derived from catechol, and its derivatives, participate in Michael addition reaction with triethyl phosphite. The reaction mechanism consists of electron transfer followed by a chemical reaction which is named as an EC mechanism. The homogeneous rate constants (kobs) were estimated by comparing the experimental cyclic voltammograms with the digitally simulated voltammograms based on EC mechanism. Also the effects of nucleophile concentration and substituted group of catechols on voltammetric behavior and the rate constants of chemical reactions were examined. |
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Keywords: | Cyclic voltammetry catechol triethyl phosphite digital simulation |
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