Processes for preparing diaryl sulfones

Details Processes for preparing diaryl sulfones Processes for preparing diaryl sulfones

1988-08-23

1990-06-26

Ceperley, Mary E.

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

Organic compounds

Sulfur containing

C07C14706

Patent

active

049373870

ABSTRACT:
An improvement in processes for preparing diaryl sulfones comprising adding a limited amount of water to the reaction product mixture of such processes to form a heavier aqueous phase containing unreacted monosubstituted benzene sulfonic acid with less than an equal amount of water, separating the aqueous phase, and dehydrating the aqueous phase to recover the unreacted sulfonic acid for forming additional diaryl sulfone.

REFERENCES:
patent: 2470896 (1949-05-01), Mavity
patent: 2556429 (1951-06-01), Lee
patent: 2593001 (1952-04-01), Bender et al.
patent: 3701806 (1972-10-01), Keogh
patent: 3935237 (1976-01-01), Davidsohn
patent: 3946037 (1976-03-01), Koebner
patent: 4172852 (1979-10-01), Ark et al.

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