Formation of 1,4,2,5-Dithiadiazines as a Heterocyclic System by Reaction of 1,4,2-Dithiazolium Salts with Sulfenamides
作者:Katsumi Yonemoto、Isao Shibuya、Kazumasa Honda
DOI:10.1246/bcsj.61.2232
日期:1988.6
application of sulfenamides for ring expansion on nitrogen atom has been reported to give 1,4,2,5-dithiadiazines (3) from 1,4,2-dithiazolium salts (1). The structure of 3 was confirmed by X-ray crystallographic analysis. The similar ring expansion reaction occurred on 1,3-dithiolium salts (5) to afford 1,4,2-dithiazines (6).
据报道,使用次磺酰胺在氮原子上扩环的第一个例子是从 1,4,2-二噻唑鎓盐 (1) 得到 1,4,2,5-二噻二嗪 (3)。通过X射线晶体学分析证实了3的结构。类似的扩环反应发生在 1,3-二硫鎓盐 (5) 上,得到 1,4,2-二噻嗪 (6)。