Substituted ethanone oximes react with S2Cl2 and pyridine to give 1,2,3-dithiazolium chlorides. The treatment of these products with malonodinitrile in dichloromethane affords 4-substituted 5 H-1,2,3-dithiazol-5-ylidenes. The reaction of the latter compounds with n-butylamine unexpectedly yielded addition products at one of the nitrile groups, viz. substituted 1,2,3-dithiazol-5-ylideneethanimidamides.
取代乙酮
肟与S2Cl2和
吡啶反应生成1,2,3-二
硫杂唑盐。在
二氯甲烷中用马隆二腈处理这些产物,得到4-取代的5H-1,2,3-二
硫杂唑-5-亚烯。后者化合物与
正丁胺的反应出乎意料地在一个腈基团上生成了加成产物,即取代的1,2,3-二
硫杂唑-5-亚烯
乙酸酰胺。