Reaction of N-arylcitraconisoimidium perchlorates with aromatic hydrocarbons under Friedel-Crafts' conditions, a new and convenient one-step method for the synthesis of beta-aroyl-alpha-aryl-N-arylbutyramides

A number of beta-Aroyl-alpha-aryl-N-arylbutyramides (<4(a)under bar>-(h) under bar) have been synthesized using a new methodology involving arylation at the alpha,beta-unsaturated ketonic systems of N-aryl-citraconisoimidium perchlorates (<2(a)under bar>-(c) under bar), followed by a subsequent ring opening via addition on the carbonyl group to give the title compounds (<4(a)under bar>-(h) under bar).