Electrochemical reduction of 5-oxoindeno[1,2-b]pyridinium perchlorates in the presence of alkylating agents

It was established that 9b-substituted 5,9b-dihydroindenopyridines are formed in addition to the reduction products on preparative electrochemical reduction of 5-oxoindeno[1,2-b]pyridinium perchlorates at a mercury electrode in acetonitrile in the presence of alkylating agents.