Process for the preparation of sulfonated arylphosphines

Details Process for the preparation of sulfonated arylphosphines Process for the preparation of sulfonated arylphosphines

1995-10-02

1997-11-04

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

568 13, C07F 950

Patent

active

056841817

ABSTRACT:
The sulfonation of arylphosphines, which contain at least one aromatic radical which can be sulfonated, is carried out with an anhydrous mixture of sulfuric acid and orthoboric acid. By choosing the appropriate reaction temperature, the process allows selective introduction of the desired number of sulfonic acid radicals into the phosphine molecule and avoids the formation of phosphine oxides. When separating the sulfonation mixture, the orthoboric acid can be separated off together with the sulfuric acid.

REFERENCES:
patent: 4483802 (1984-11-01), Gartner et al.
patent: 4668824 (1987-05-01), Jenck et al.
patent: 5274183 (1993-12-01), Hermann et al.
patent: 5451698 (1995-09-01), Bahrmann et al.

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