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Letters in Organic Chemistry

Author(s): Davood Nematollahi, Saied S.H. Davarani, Pari Mirahmadpour and Fahimeh Varmaghani

DOI: 10.2174/1570178611666140207220757

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Investigation of Electrochemically Induced Michael Addition Reactions of Ortho- and Para-banzoquinones with 2-Mercaptobenzimidazole: Application to Electrosynthesis

Page: [398 - 402] Pages: 5

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Abstract

Electrochemical oxidation of hydroquinone and catechol derivatives (1a-1d) has been studied in the presence of 2-mercaptobenzimidazole (3) as a nucleophile in water/acetonitrile (85/15, v/v) solutions using cyclic voltammetry. Our results indicate that electrogenerated benzoquinone participated in a Michael addition reaction with 2- mercaptobenzimidazole (3) and via an EC mechanism were converted to the corresponding thioimidazole compounds. These products were obtained in good yields using a carbon electrode in an undivided cell.

Keywords: Catechol, Hydroquinone, Electrochemical synthesis, Thioimidazole, Cyclic voltammetry, Michael addition reaction.

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