1,2-Benzisothiazole 1,1-dioxides. Synthesis of 3-alkyl-(or aryl-)1,2-benzisothiazole 1,1-dioxides and related compounds
作者:Rudolph. A. Abramovitch、Elizabeth M. Smith、Manda Humber、Bea Purtschert、Panayencheri C. Srinivasan、George M. Singer
DOI:10.1039/p19740002589
日期:——
A synthesis of 3-substituted 1,2-benzisothiazole 1,1-dioxides from saccharin (1,2-benzisothiazolin-3-one 1,1-dioxide) and organolithium compounds is described. The reaction of saccharin and of saccharin pseudo-chloride (3-chloro-1,2-benzisothiazole 1,1-dioxide) with Grignard reagents has been investigated systematically. 1,2-Benzisothiazole 1,1-dioxide (1) are formed together with the open-chain tertiary
描述了由糖精(1,2-苯并噻唑啉-3-一,1,1-二氧化物)和有机锂化合物合成3-取代的1,2-苯并噻唑1,1-二氧化物。系统研究了糖精和糖精假氯化物(3-氯-1,2-苯并噻唑1,1-二氧化物)与格氏试剂的反应。1,2-苯并异噻唑1,1-二氧化物(1)与开链叔醇(8)以及在一种情况下形成3,3-二取代的1,2-苯并噻唑啉1,1-二氧化物(2)一起形成)。N-酰基-o,N-二硫代苯磺酰胺的分子内环化产生3-取代的1,2-苯并噻唑1,1-二氧化物的低产率。