Copper‐Catalyzed Four‐Component Cascade Reaction for the Construction of Triazoles Bearing β‐Hydroxy Chalcogenides.

A copper‐catalyzed four‐component cascade reaction for the preparation of triazoles bearing β‐hydroxy chalcogenides from terminal alkynes, azides, epoxides, and Se/K2S is reported. The present reaction proceeds under mild conditions, and exhibits a good functional group compatibility. A possible mechanism is proposed. [ABSTRACT FROM AUTHOR]