Production of phosphorus-containing esters

Details Production of phosphorus-containing esters Production of phosphorus-containing esters

C - Chemistry, Metallurgy

07

F

260/457

C07F 9/08 (2006.01) C07F 9/09 (2006.01) C07F 9/141 (2006.01) C07F 9/40 (2006.01) C07F 9/48 (2006.01)

Patent

CA 1048043

PRODUCTION OF PHOSPHORUS-CONTAINING ESTERS ABSTRACT OF THE DISCLOSURE: Production of phosphorus-containing esters of the general formula: Image in which X stands for an alkyl group having from 1 to 3 carbon atoms, an aryl group or an alkoxy group having from 1 to 6 carbon atoms, Y stands for an alkoxy group having from 1 to 6 carbon atoms, and Z stands for a hydrogen atom, an alkyl group having from 1 to 3 carbon atoms, an aryl group or an alkoxy group having from 1 to 6 carbon atoms. The esters are produced by reacting one or more phosphorus halides of the general formula: Image in which A and B stand independently from one another, for a chlorine or bromine atom, an alkyl group having- from 1 to 3 carbon atoms or an aryl group, C stands for a chlorine or bromine atom and D stands for a free pair of electrons or an oxygen atom, with aliphatic alcohols having from 1 to 6 carbon atoms. More particularly the phosphorus halide(s) and the aliphatic alcohol are heated to boiling in a reaction zone, at temperatures within the range 50 and 200°C, the resulting hydrogen halide and alcohol in excess are passed to the upper portion of the reaction zone, condensed therein and removed therefrom; and resulting phosphorus-containing ester is delivered, if desired with an excess of aliphatic alcohol, to the lower portion of the reaction zone and removed therefrom.

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