To the best of our knowledge, this is first report describing generation of Michael acceptor via electrochemical reduction. In this work, electrochemical reduction of 4-nitroso-N,N-dimethylaniline has been studied in the presence of arylsulfinic acids in aqueous solutions. The cathodically generated pquinonediimine participates in Michael type addition reaction with arylsulfinic acids and converts to the corresponding sulfonamide derivatives. This work has led to the development of a facile and environmentally friendly reagent-less electrochemical method for the synthesis of some sulfonamide derivatives with safe waste under green conditions.
