Thermolysis of 1, 3-dithiol-2-yl azides and thermal properties of the resulting 1,4,2-dithiazines
作者:Juzo Nakayama、Atsuhiro Sakai、Akira Tokiyama、Masamatsu Hoshino
DOI:10.1016/s0040-4039(00)94520-9
日期:1983.1
azides, on thermolysis in refluxing toluene, give 3-substituted 1,4,2-dithiazines which thermally extrude sulfur atom of the 4-position selectively to yield 3-substituted isothiazoles, while 2-unsubstituted 1,3-dithiol-2-yl azides undergo both ring expansion yielding 1,4,2-dithiazines and peculiar thermal dissociation into 1,3-dithiol-2-ylidene carbenes and hydrogen azide.
在回流的甲苯中热解后,将2-取代的1,3-二硫醇-2-基叠氮化物生成3-取代的1,4,2-二噻嗪,其选择性地热挤出4-位的硫原子,从而生成3-取代的异噻唑,而2-未取代的1,3-二硫醇-2-基叠氮化物均经历扩环反应,生成1,4,2-二噻嗪,并且发生特殊的热解离反应,生成1,3-二硫醇-2-亚基苯甲酸酯和叠氮化氢。