Regioselective synthesis of 6-benzylthiazolo[3,2-b]1,2,4-triazoles during Sonogashira coupling

The reaction of 3-mercaptopropargyl-1,2,4-triazoles with various iodobenzenes catalyzed by Pd-Cu leads to the regioselective formation of 6-benzylthiazolo[3,2-b]1,2,4-triazoles.