Copper-Catalyzed Tandem Reactions of 2-Iodobenzamides with Sodium Azide: An Efficient Synthesis of [1,2,3] Triazolo[1,5-a][1,4]-benzodiazepin-6(5H)-ones

Copper-catalyzed tandem reactions between 2-iodobenzamides with a propargyl group on the nitrogen atom moiety and sodium azide are presented, providing an efficient method for the synthesis of 3-substituted [1,2,3]triazolo[1,5-a][1,4]benzodiazepin-6(5H)-ones under mild conditions in moderate yields.