bis(diethylamino)acetylene 、
7,8-Dihydro-8-methyl-7-oxo-1,3,4-thiadiazolo<3,2-a><1,3,5>triazin-4-ium-5-olat 以
甲苯 为溶剂,
反应 0.33h,
以47%的产率得到(5Z)-5-<(Diethylamino)(diethylcarbamoyl)methylen>-5,8-dihydro-8-methyl-1,3,4-thiadiazolo<3,2-a><1,3,5>triazin-4-ium-7-olat