Abstract
A metal‐free, room temperature protocol for the regioselective chloroazidation of internal alkynes is disclosed. The reactions of internal alkynes with trimethylsilyl azide (TMS‐N3) in the presence of 1,3‐dichloro‐5,5‐dimethylhydantoin (DCDMH) afforded the corresponding chloroazidoalkenes in good yields. This reaction displays good functional group tolerance and is operationally simple.