申请人:Hoechst Aktiengesellschaft
公开号:US05510504A1
公开(公告)日:1996-04-23
A process for the preparation of .alpha.- or .alpha.,.alpha.'-substituted derivatives of the bis(aminomethyl)phosphinic acid of the formula I and their acid or basic salts, ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are defined as in the description, wherein a bis(aminomethyl)phosphinate is converted into the corresponding bisimine, which is alkylated by R.sup.2 and R.sup.3 in the .alpha.- and/or .alpha.,.alpha.'-position after reaction with a base, and is converted into a compound of the formula I by subsequent treatment with an acid.
一种制备公式I的双(氨甲基)膦酸的α-或α,α'-取代衍生物及其酸性或碱性盐的方法,其中R.sup.1、R.sup.2和R.sup.3的定义如描述中所述,其中双(氨甲基)膦酸酯被转化为相应的双亚胺,与碱反应后在α-和/或α,α'-位置被R.sup.2和R.sup.3烷基化,并通过随后用酸处理转化为公式I的化合物。