Electrochemical oxidation of 4–methylesculetin has been studied in the presence of arylsulfinic acids as nucleophiles in aqueous/
acetonitrile solution mixture, using cyclic voltammetry and controlled-potential coulometry. The results indicate that the o-quinone
derived from oxidation of 4–methylesculetin undergoes a 1,6–Michael addition reaction with unique selectivity, converts to the corresponding
new sulfone derivative of esculetin. The reaction products were derived with good yields and excellent selectivity based on
electrochemical oxidation under controlled potential conditions at a carbon electrode in an undivided cell.
Keywords: 4-Methylesculetin, 1, 6-Michael addition, arylsulfinic acids, cyclic voltammetry, electrochemical synthesis.
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Published on: 09 April, 2013
Page: [848 - 852]