Patent ID: 7767852
Filing Date: 2010-08-03
Classification: C07C,C07D,C07F

Abstract:
1. A method for the synthesis of a phosphorus compound, comprising: reacting a phosphorus halide with an amine or an alcohol, thereby liberating an acid; wherein said phosphorus halide is a compound having at least one phosphorus-halogen (P-Hal) bond; reacting (i) said acid liberated during said synthesis and (ii) an auxiliary base to form a salt of the auxiliary base; said salt being liquid at temperatures at which the phosphorus compound is not significantly decomposed during the process of separating off the liquid salt; forming two immiscible liquid phases, a first phase comprising said salt of the auxiliary base and a second phase comprising said phosphorus compound or a solution of said phosphorus compound in a solvent; and separating said first phase from said second phase; wherein said phosphorus compound is selected from the group consisting of aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides, aminophosphine halides and phosphonous ester halides; wherein the base used is selected from the group consisting of compounds of the formulae (Ia) to (Ir), wherein R