A method for the production of mono amino functionalized dialkylphosphinic acids, - esters and - salts by means of acrylonitriles and their use

摘要

The present invention relates to a process for the preparation of mono - amino-functionalized dialkylphosphinic acids, - esters and - salts by means of acrylonitriles, characterized in that onea) a phosphine acid source (i) with olefins (iv) in the presence of a catalyst a to a alkylphosphonous, the salt or ester (ii) reacting,b) the resulting alkylphosphonous, the salt or ester (ii) having an acrylonitrile of the formula (v) in the presence of a catalyst b to a mono - functionalized dialkyl phosphine acid derivative (vi) andc), which has been formed in such a mono - a functionalized dialkyl phosphine acid derivative (vi) in the presence of a catalyst c or a reducing agent to the mono - amino-functionalized dialkyl phosphine acid derivative (iii) , in which r¹, R², R³, R⁴, R⁵, R⁶, R⁷ are the same or different and independently, inter alia, h, c₁-C.₁₈-Alkyl, c.sub.2₆-C.₁₈-Aryl, c₆-C.₁₈-Aralkyl, c.₆-C.₁₈-Alkylaryl and x represents h, c₁-C.₁₈-Alkyl, c.sub.2₆-C.₁₈-Aryl, c₆-C.₁₈-Aralkyl, c.₆-C.₁₈-Alkylaryl, mg, ca, al, sb, sn, ge, ti, fe, zr, zn, ce, bi, sr, mn, cu, ni, li, na, k and / or a protonated nitrogen base and y is for a mineral acid, carboxylic acid, lewis acid or organic acid, with n for a whole or broken number from 0 to 4, and the catalysts a and c by transition metals, transition metal compounds and / or catalyst systems are concerned, which from a transition metal and / or ..