ANODIC-OXIDATION OF ENAMINONES

Anodic oxidation of enaminones (1a-1e), prepared from p-substituted ac etophenones and N,N-dimethylformamide dimethylacetal were studied unde r different solution conditions using cyclic voltammetry, coulometry a t controlled potential and preparative electrolysis. Two major product s from preparative anodic oxidation of N-dimethylamino)-1-(4-nitrophen yl)-2-propen-1-one, 1a, were isolated,ie the dimeric product 2 and 2,5 -bis-(p-nitrophenyl)furane, 3, in 50 and 20% yield, respectively.