The sulfa-Michael/aldol cascade reaction of 5-arylmethylidene-1-phenyl-6,7-dihydro-1H-indazol-4(5H)-ones and 1,4-dithiane-2,5-diol yielded novel 2′-(4-aryl)-4′-hydroxy-1-phenyl-4′,5′,6,7-tetrahydro-2′H-spiro[indazole-5,3′-thiophen]-4(1H)-ones in moderate yields. The structures of all the products were characterised thoroughly by NMR, IR and HRMS, together with X-ray crystallographic analysis.

中文翻译：

---

通过磺胺-迈克尔/醛醇级联反应合成螺吲唑-四氢噻吩

5-芳基亚甲基-1-苯基-6,7-二氢-1H-吲唑-4(5H)-酮和1,4-二噻烷-2,5-二醇的磺胺-迈克尔/醛醇级联反应产生了新的2'- (4-芳基)-4'-羟基-1-苯基-4',5',6,7-四氢-2'H-螺[吲唑-5,3'-噻吩]-4(1H)-ones产量适中。所有产物的结构都通过NMR、IR和HRMS以及X射线晶体学分析进行了彻底表征。