A process for preparing N-phosphonomethylglycine which comprises: (1) reacting a primary amine with formaldehyde to produce N,N', N"-tris-substituted-hexahydro-s-triazine; (2) reacting the triazine with an haloacetyl halide, preferably chloroacetyl chloride, to form the N-(substituted)-N-halomethyl acetamide of the haloacetyl halide; (3) reacting the amide with O,O-di-(substituted)-aminomethylphosphonate to form O,O-di-(substituted)-1-phosphonomethyl-3-(substituted)-1,3-imidazol-4-one; and (4) hydrolyzing the 1,3-imadazol-4-one to yield N-phosphonomethylglycine.
                            一种制备N-
磷酸甲基甘
氨酸的方法,包括:(1)将一级胺与
甲醛反应,制备N,N',N"-三取代六氢-s-三嗪;(2)将三嗪与卤代乙
酰卤,优选
氯乙酰氯,反应,形成卤代乙
酰卤的N-(取代基)-N-卤代甲基乙酰胺;(3)将酰胺与O,O-二-(取代基)-
氨甲基膦酸酯反应,形成O,O-二-(取代基)-1-
磷酸甲基-3-(取代基)-1,3-
咪唑-4-酮;(4)
水解1,3-
咪唑-4-酮,得到N-
磷酸甲基甘
氨酸。