Disclosed is a method for the preparation of N-phosphonomethylglycine which comprises the steps of (1) reacting 1,3,5-tris(alkoxy- or aryloxy-substituted carbonylmethyl) hexahydro-s-triazine, with a substituted phosphorus compound having the formula PXYZ wherein X is a halogen, Y and Z are independently selected from the group consisting of halogen, alkoxy having from 1 to 10 carbon atoms, and aryloxy, in the presence of a protic acid and a low molecular weight carboxylic acid; (2) heating said reactants to a temperature ranging from about 10.degree. to about 25.degree. C. for a sufficient period of time to cause the formation of an N-phosphonomethylglycine ester,; and (3) hydrolyzing said phosphonomethylglycine ester to N-phosphonomethylglycine.
本发明揭示了一种制备N-
磷酸甲基甘
氨酸的方法,包括以下步骤:(1) 在质子酸和低分子量
羧酸的存在下,将1,3,5-三(烷氧基或芳氧基取代的羰基甲基)六氢-s-三嗪与具有PXYZ式的取代
磷化合物反应,其中X为卤素,Y和Z独立地选自卤素、具有1至10个碳原子的烷氧基和芳氧基的群体;(2)将反应物加热至约10℃至25℃的温度范围内足够长的时间,以使N-
磷酸甲基甘
氨酸酯形成;(3)
水解所述的
磷酸甲基甘
氨酸酯成为N-
磷酸甲基甘
氨酸。