Novel compounds, N,N′-bis(phosphonomethyl)-N,N′-bis(hydroxycarbonylmethyl)urea and N,N,N′,N′-tetrakis(hydroxycarbonylmethyl)urea, suitable for use in preparing N-acyl aminocarboxylic acids that can be readily converted to N-(phosphonomethyl)glycine are provided. The compounds may be formed by the reaction of bis-(phosophonomethyl)urea or urea respectively with carbon monoxide and formaldehyde in the presence of a carboxymethylation catalyst precursor and solvent.
提供了适用于制备可轻松转化为N-(
磷酸甲基)甘
氨酸的N-酰基
氨基
羧酸的新化合物,即N,N′-双(
膦酸甲基)-N,N′-双(羟基甲酰基)
脲和N,N,N′,N′-四(羟基甲酰基)
脲。这些化合物可以通过在羧甲基化催化剂前体和溶剂存在下,将双(
膦酸甲基)
脲或
脲分别与
一氧化碳和
甲醛反应而形成。