Copper‐Catalyzed Decarbonylative Cyclization of Isatins and Trifluoroacetimidohydrazides for the Synthesis of 2‐(5‐Trifluoromethyl‐1,2,4‐triazol‐3‐yl)anilines
作者:Yu Zhang、Zuguang Yang、Zhengkai Chen、Leifang Liu、Xiao‐Feng Wu
DOI:10.1002/adsc.202101397
日期:2022.3
A copper-catalyzed intramolecular decarbonylative cyclization reaction of isatins and trifluoroacetimidohydrazides for the synthesis of 2-(5-trifluoromethyl-1,2,4-triazol-3-yl)aniline derivatives has been developed. This transformation proceeds through a cascade condensation, hydrolysis, decarboxylation, and intramolecular C−N bond formation sequence. The obtained 1,2,4-triazole products bearing a
开发了铜催化的靛红和三氟乙酰亚氨基酰肼的分子内脱羰环化反应,用于合成 2-(5-trifluoromethyl-1,2,4-triazol-3-yl) 苯胺衍生物。这种转化通过级联缩合、水解、脱羧和分子内 C-N 键形成序列进行。得到的带有游离氨基的 1,2,4-三唑产物可以很容易地转化为其他有用的化合物。