Abstract
Abstract In the present work, electrochemical synthesis of novel pyrimido[4,5-b]indoles was directly carried out via the electrochemical oxidation of catechols in the presence of 2,4-diamino-6-hydroxypyrimidine in an aqueous media. The results suggested that electrogenerated o-benzoquinone moieties participated in the Michael-type addition reaction with 2,4-diamino-6-hydroxypyrimidine via the ECEC mechanism. These new compounds were synthesized in high yields and purity in an aqueous solution without toxic reagents or catalyst and with high atom economy in ambient conditions.
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