Preparation of N-(α,β-unsaturated acyl)-sulfonamides

Abstract

N-(α,β-Unsaturated acyl)sulfonamides are prepared (i) by the N-acylation of sulfonamides with N-(α,β-unsaturated acyl)benzotriazoles in the presence of potassium tert-butoxide or sodium hydride and (ii) by reactions of appropriate αβ-unsaturated carboxamides with sulfonylbenzotriazoles in the presence of sodium hydride. © ARKAT USA, Inc..