PROCEDURE FOR PREPARING N,N-DIMETHYL-3-AMINE-1-HYDROXY- PROPILYDEN-BIS-PHOSPHONIC ACIDS AND THEIR SALTS.

摘要

Preparation of acid n, N - dimethyl - 3 - amino - 1 - bis - hidroxipropiliden of formula (i), phosphonic acid by reaction of N, N - dimethyl - 3 - (n, aminopropionico n-dimethyl-beta-alanine) with Phosphorus CompoundsSuch as phosphorous acid or PHOSPHORUS TRICHLORIDE and PHOSPHORUS OXYCHLORIDE, in excess of Phosphorus Compound with respect to the Beta Alanine.