Preparation of diaryl sulfones

Details Preparation of diaryl sulfones Preparation of diaryl sulfones

C - Chemistry, Metallurgy

07

C

260/643.3

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

Patent

CA 1299200

C-8453/8412 PREPARATION OF DIARYL SULFONES ABSTRACT OF THE DISCLOSURE Diaryl sulfones are formed in a two-stage procedure. The first involves the reaction of an aryl sulfonic acid with an aryl reagent containing active hydrogen while by- product water is removed azeotropically. In the second stage, which contains unreacted sulfonic acid, is treated with a sulfone condensing agent and additional aryl reagent to react additional, unreacted aryl sulfonic acid from the first stage.

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