METHOD OF PRODUCING ALKYLAMINOALKYLENE PHOSPHONIC ACIDS Russian patent published in 2013 - IPC C07F9/38 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing alkylaminoalkylene phosphonic acids of formula U-[X-N(W)(ZPO₃M₂)]_S, which can be used in chemical industry. The disclosed method involves reacting a compound of formula Y-X-N(W)(ZPO₃M₂) with a precursor for groups U, selected from NH₃, NH₂R', NH(R')₂, HOR', NaOH, Na₂S, thiourea and Na₂S₂, where Y is chlorine, X is a C₂-C₃ linear alkyl, Z is C₁ alkylene, M is H; W is ZPO₃M₂, U is selected from NH₂, NHR', N(R')₂, NH, N, OH, OR', S, SH and S-S, R' is phenyl or a C₁-C₃ linear alkyl, s equals 1, if U is NH₂, NHR', N(R')₂, HS, OR or OH; s equals 2, if U is NH, S or S-S; and s equals 3, if U is N, in an aqueous medium at pH 8 or higher, at temperature from 10°C to 110°C.

EFFECT: novel efficient method of producing alkylaminoalkylene phosphonic acids.

3 cl, 14 ex