On the Behavior of Sulfonyl Imide as a Reactive Intermediate. The Reaction with Enamines
作者:Toshikazu Nagai、Tadao Shingaki、Masao Inagaki、Tetsuya Ohshima
DOI:10.1246/bcsj.52.1102
日期:1979.4
chloride with enamines in the presence of triethylamine showed the presence of N-alkylsulfonyl imide (RN=SO2) as a reaction intermediate to give either acyclic (sulfonamides) or cyclic products (1,2-thiazetidine 1,1-dioxides), depending upon the enamines used. The enamines leading to the acyclic products possess either a methylene group on the α-carbon or a hydrogen on the β-carbon of the enamine; the enamine
N-烷基氨磺酰氯与烯胺在三乙胺存在下的反应表明存在 N-烷基磺酰亚胺 (RN=SO2) 作为反应中间体,生成无环(磺酰胺)或环状产物(1,2-噻唑烷 1,1 -二氧化物),取决于所使用的烯胺。导致无环产物的烯胺在α-碳上具有亚甲基或在烯胺的β-碳上具有氢;导致环状产物的烯胺没有这样的可用氢原子。据认为,产物是通过磺酰亚胺硫原子对烯胺的 β-碳原子的亲电攻击提供的两性离子中间体形成的。