Reaction of normal and pseudo 2-formylbenzenesulfonyl chlorides with amines: Experimental and theoretical studies on the structure of 2-formyl benzenesulfonamides in solid, solution and gas phases.
作者:Kallanthottathil G. Rajeev、Srikantiah M. Shashidhar、Kuruvilla Pius、Vivekananda M. Bhatt
DOI:10.1016/s0040-4020(01)80699-2
日期:1994.5
The reaction of 2-formylbenzenesulfonyl chloride 1 and its pseudo isomer 2 with primary amines give either the corresponding sulfonamido Schiff bases or the corresponding 2-formylbenzenesulfonamide depending on the concentration of the amine used. These derivatives exist as an equilibrium mixture of the corresponding sulfonamide and 2-alkyl-3-hydroxy(or 3-aminoalkyl)-benzisothiazole-1,1-dioxide. Spectroscopic
2-甲酰基苯磺酰氯1及其假异构体2与伯胺的反应取决于所用胺的浓度而得到相应的磺酰胺基席夫碱或相应的2-甲酰基苯磺酰胺。这些衍生物以相应的磺酰胺和2-烷基-3-羟基(或3-氨基烷基)-苯并噻唑-1,1-二氧化物的平衡混合物形式存在。光谱研究表明2-甲酰基苯磺酰胺以固态形式的苯并异噻唑-1,1-二氧化物,溶液中2-甲酰基苯磺酰胺和相应的苯异噻唑-1,1-二氧化物的混合物以及在气体中以2-甲酰基苯磺酰胺的形式存在阶段。