Microwave-Assisted C-N Coupling for the Synthesis of 2-(2H-1,2,3-Triazol-2-yl)benzoic Acid Scaffold and Novel N-Phenyl-2-(2H-1,2,3- triazol-2-yl)benzamide Derivatives

Abstract

We report a novel methodology for the efficient and rapid synthesis of core intermediate 2-(2H-1,2,3- triazol-2-yl)benzoic acid using trans-N,N’-dimethylcyclohexane-1,2-diamine as a catalyst and copper iodide as co-catalyst under microwave irradiations and a series of novel N-phenyl-2-(2H-1,2,3-triazol- 2-yl)benzamide derivatives via acid-amine coupling reaction using DCC as a dehydrating agent and DMAP as a base. In comparison to the conventional heating procedure and performing the reaction using different combinations of catalysts and bases, the time of synthesis and efforts are significantly reduced in the present method, which also gave excellent yield. The scaffold and all novel amides were characterized by spectroscopic techniques.