Processes for preparing diaryl sulfones

Details Processes for preparing diaryl sulfones Processes for preparing diaryl sulfones

C - Chemistry, Metallurgy

07

C

260/643.3

C07C 317/14 (2006.01) C07C 315/00 (2006.01) C07C 315/06 (2006.01)

Patent

CA 1275657

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.

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