A simple, general method for the synthesis of fully substituted 5‐selanyl‐1,2,3‐triazoles is described. In the presence of CuI (10 mol‐%) and 1,10‐phenanthroline (10 mol‐%), a three‐component reaction of ethynylstibanes, organic azides, and diaryl diselenides gave 5‐selanyltriazoles in moderate‐to‐excellent yields. Under aerobic conditions, the reaction proceeded efficiently, and both of the two selanyl groups were transferred from the diaryl diselenide to the product. In this three‐component reaction, ethynylstibanes, containing an antimony atom, gave better results than various alkynes containing other typical elements, such as silicon, tin, and tellurium.

No abstract