Abstract
N-(alpha,beta-Unsaturated acyl)sulfonamides are prepared (i) by the N-acylation of sulfonamides with N-(alpha,beta-unsaturated acyl) benzotriazoles in the presence of potassium tert-butoxide or sodium hydride and (ii) by reactions of appropriate alpha,beta-unsaturated carboxamides with sulfonylbenzotriazoles in the presence of sodium hydride.