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چکیده
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A lot of coumarins have been identified from natural sources. Coumarins have attracted intense interest in recent years because of their diverse pharmacological properties. Electrochemical has emerged as a powerful tool for the synthesis of complex organic molecules.Michael addition reaction of nucleophiles to unsaturated carbonyl compounds is a very useful synthetic method in organic chemistry providing efficient access to a variety of natural products or compounds with pronounced biological activity [1]. Electrochemical synthesis of N,N-dialkyl-p-phenylenediamines [2] has been studied in the presence of 4- hydroxycoumarin and 4-hydroxy-6-methylcoumarin and 4-hydroxy-6,7-dimethylcoumarin [3]. Among the numerous methods to synthesize substituted N,N-dialkyl-p-phenylenediamines, Michael addition reactions play an important role. In this context, as a part of a program to electrochemical synthesis of novel compounds based on the in situ generation of Michael acceptor. We derived new N,N-dialkyl-p-phenylenediamines derivatives in good yields based on controlled potential electrochemical oxidation at carbon electrode in a divided cell. In this work, also, we compared the obtained products with the products of electrochemical oxidation of N,N-dialkyl-p-phenylenediamines and in the presence of 4- hydroxy-6,7-dimethylcoumarin.
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