The sulfa-Michael/aldol cascade reaction of (Z)-2-arylmethylidene-benzo[4,5]imidazo[2,1-b]thiazol-3(2H)-ones and 1,4-dithiane-2,5-diol afforded novel 2-aryl-4-hydroxy-spiro[benzo[4,5]imidazo[2,1-b][1,3]thiazole-2,3-thiolan]-3-ones in moderate yields. The structures of all the products were characterized thoroughly by nuclear magnetic resonance, infrared and high-resolution mass spectrometry together with X-ray crystallographic analysis.

中文翻译：

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通过磺胺-迈克尔/醛醇级联反应合成螺[苯并[4,5]咪唑并[2,1-b][1,3]噻唑-2,3-硫烷]

(Z)-2-芳基亚甲基-苯并[4,5]咪唑并[2,1-b]噻唑-3(2H)-酮和1,4-二噻烷-2,5-的磺胺-迈克尔/醛醇级联反应二醇以中等产率提供新型 2-芳基-4-羟基-螺[苯并[4,5]咪唑并[2,1-b][1,3]噻唑-2,3-硫戊环]-3-酮。所有产物的结构均通过核磁共振、红外和高分辨质谱以及X射线晶体学分析进行了彻底表征。