A convenient and efficient procedure for the synthesis of benzo[4,5]thiazolo [2,3-c][1,2,4]triazoles has been developed via a tandem intermolecular C–N bond and intramolecular C–S bond formation sequence from o-bromo-arylisothiocyanates and aroylhydrazides. A series of benzo[4,5]thiazolo[2,3-c][1,2,4]triazoles were provided in excellent overall yields with 1 mol% CuCl₂·2H₂O/1 mol% 1,10-phenanthroline as the catalyst and water as the solvent.

中文翻译：

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以1摩尔％CuCl ₂ ·2H ₂ O为催化剂，方便地合成苯并[4,5]噻唑并[2,3- c ] [1,2,4]三唑

通过串联分子间C–N键和分子内CS键形成序列，开发了一种便捷高效的合成苯并[4,5]噻唑并[2,3- c ] [1,2,4]三唑的方法由邻-溴-芳基异硫氰酸酯和芳酰肼得到。以1 mol％CuCl ₂ ·2H ₂ O / 1 mol％1,10-菲咯啉提供了一系列优异的总收率的一系列苯并[4,5]噻唑并[2,3- c ] [1,2,4]三唑作为催化剂，水作为溶剂。