N-(5,5,7-trimethyl-4,5,6,7-tetrahydrobenzothiazol-2-yl)-N'-methylthiourea 、
三聚甲醛 、
sodium hydroxide 在
硫酸 、
水 作用下,
以
水 为溶剂,
反应 16.0h,
以to yield the desired product 3-(5,5,7-trimethyl-4,5,6,7-tetrahydrobenzothizol-2-yl)-5-methyltetrahydro-1,3,5-oxidiazin-4-one的产率得到3-(5,5,7-trimethyl-4,5,6,7-tetrahydrobenzothiazol-2-yl)-5-methyltetrahydro-1,3,5-oxadiazin-4-one