Process for preparing sulfonated arylphosphines

Details Process for preparing sulfonated arylphosphines Process for preparing sulfonated arylphosphines

C - Chemistry, Metallurgy

07

F

C07F 9/50 (2006.01)

Patent

CA 2126417

The sulfonation of arylphosphines, i.e. mono-, di-, oligo- and polyphosphines which contain at least one aromatic radical capable of being sulfonated, is carried out according to the invention in the presence of a Lewis acid. The novel process avoids side-reactions, in par- ticular the formation of phosphine oxides. In working up the sulfonation mixture the Lewis acid can be removed together with the sulfuric acid.

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