The reaction of malononitrile with some β-dicarbonyl compounds

Abstract

The reaction of β-keto esters and amides with malononitrile, in the presence of alcohol, has been shown to proceed through cyanocarbon acid and iminopyran intermediates to yield the pyridones (3).With β- diketones, in benzene solution, a similar reaction is accompanied by the formation of δ-lactams(15) and benzene derivatives (16).