VERFAHREN ZUR HERSTELLUNG VON HALOGENE ENTHALTENDEN ORGANISCHEN PHOSPHORVERBINDUNGEN

Method of producing compounds of the general formula XPR2(OR1) Ia where X is chlorine, bromine or iodine and R1 is an organic radical, by reacting compounds of the general formula X2PR2 II, in which X has the meaning given above and R2 is an organic radical, with compounds of the general formula R1OH III, in which R1 has the meaning given above, to give a mixture IV, in that a) the postreaction is carried out at a temperature of from 50 to 240° C. and a pressure of from 0.001 to 0.9 bar, b) from the mixture IV the compounds Ia are separated off from the compounds PR2(OR1)2 Ib and, if appropriate, the compounds II and c) compounds Ib and, if appropriate, unreacted compounds II are returned to the synthesis stage.