中文摘要：

一 trifluoromethyl 酉同类 N-tosylhydrazones，炔属羟和叠氮化物的催化 CuI 的三部件的联合被开发了。reactionrepresents 存取 difluoromethylene 的一个直接方法代替了 1,2,3-triazoles。机械学地，反应跟随包含 Cu (I) triazolide 中介， Cu (I) carbene 形成，迁移的插入，和氟化物消除的形成的一条小径，这被建议了。Thetransformation 被温和条件，宽底层范围和高效率展示。

英文摘要：

A Cul-catalyzed three-component coupling of trifluoromethyl ketone N-tosylhydrazones, alkynes and azides has been developed. The reaction represents a straightforward method to access difluoromethylene substituted 1,2,3-triazoles. Mechanistically, it has been proposed that the reaction follows a pathway involving the formation of Cu（1） triazolide intermediate, Cu（I） carbene formation, migratory insertion, and β-fluoride elimination. The trans- formation is featured by mild conditions, wide substrate scope and high efficiency.