| 摘要 |
Method of producing compounds of the general formula XPR2(OR1) I a 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 I a are separated off from the compounds PR2(OR1)2 I b and, if appropriate, the compounds II and c) compounds I b and, if appropriate, unreacted compounds II are returned to the synthesis stage.
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