Copper‐Catalyzed Four‐Component Reaction of Baylis–Hillman Adducts with Alkynes, Sulfonyl Azides and Alcohols

Abstract

Abstract 4‐(Alkoxycarbonyl)‐pent‐4‐enimidates were regioselectively synthesized via a copper‐catalyzed four‐component reaction of Baylis–Hillman adducts with terminal alkynes, sulfonyl azides and alcohols. The procedure is concise, general and efficient. The resulting pentenimidates could be further transformed to 3‐methylene‐2,3‐dihydroindene‐1‐imidates.