Stereoselective Z-halosulfonylation of terminal alkynes using sulfonohydrazides and CuX (X = Cl, Br, I)

Abstract

The unconventional <italic>Z</italic>-selective halosulfonylation of terminal alkynes has been achieved by using CuX (X = Cl, Br, I)/sulfonohydrazides at rt, providing a practical and new route for the synthesis of diverse halogenated vinyl sulfones.