A process for the preparation of a 1-amino-1,3,5-triazine-2,4(1H, 3H)-dione compounds comprising the steps of reacting an N-substituted imido-dicarboxylic acid diaryl ester with an isothiosemicarbazone at a temperature of between 50.degree. and 150.degree. C. to form a 1-alkylidene-amino-1,3,5-triazine-2,4(1H, 3H)-dione reaction product; and thereafter, hydrolyzing the reaction product in an acid medium. The reaction product need not be separated from the reaction mixture before the hydrolysis step. Certain novel 1-amino-1,3,5-triazine-2,4(1H, 3H)-dione compounds are provided. The compounds are useful as herbicides.
一种制备1-
氨基-
1,3,5-三嗪-2,4(1H,3H)-二酮化合物的方法,包括以下步骤:在50℃至150℃的温度下,将N-取代
亚胺基二
羧酸二芳基酯与异
硫氰酸肼反应,形成1-烷基亚甲基-
1,3,5-三嗪-2,4(1H,3H)-二酮反应产物;然后,在酸性介质中
水解反应产物。在
水解步骤之前,不需要将反应产物从反应混合物中分离出来。提供了某些新型1-
氨基-
1,3,5-三嗪-2,4(1H,3H)-二酮化合物。这些化合物可用作
除草剂。