Cu (I) ‐catalyzed Green Synthesis of Propargyl Amines Decorated with Carbazole Moiety by A 3 ‐Coupling

A series of novel N ‐alkylcarbazol–propargylamine hybrids were designed and synthesized by Cu I Br ‐catalyzed A 3 ‐coupling of N ‐octylcarbazol‐3‐carbaldehyde, amines, and alkynes. The tri‐substituted propargyl amines decorated with carbazole moiety were obtained under solvent‐free conditions in good to moderate yields. Furthermore, the scope of the method was studied, which was found to be applicable to primary aliphatic and aromatic amines. Also, a large variety of substituents both on alkynes and anilines are well tolerated.