Purification of halogenated aromatic sulfones or ketones

Details Purification of halogenated aromatic sulfones or ketones Purification of halogenated aromatic sulfones or ketones

C - Chemistry, Metallurgy

07

C

260/588, 260/649

C07C 315/06 (2006.01) C07C 45/80 (2006.01) C07C 45/81 (2006.01) C07C 317/22 (2006.01) C07C 317/14 (2006.01)

Patent

CA 2023862

Abstract of the Disclosure A process for purifying a halogenated aromatic sulfone or ketone compound comprising contacting the compound with a solvent having a normal boiling point less than about 225°C to form a mixture, heating the mixture to a temperature above the normal boiling point of the solvent in a closed system to form a solution, cooling the solution to recrystallize the compound, and recovering the compound. A second embodiment of the invention comprises repeating the purification process steps at least once to further purify the halogenated aromatic sulfone or ketone compound.

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