Process or the preparation of difluoromaleic anhydride and...

Details Process or the preparation of difluoromaleic anhydride and... Process or the preparation of difluoromaleic anhydride and...

C - Chemistry, Metallurgy

07

D

C07D 307/60 (2006.01) C07C 51/305 (2006.01) C07C 51/54 (2006.01) C07D 333/32 (2006.01)

Patent

CA 2095641

2095641 9208710 PCTABS00013 A process for producing difluoromaleic anhydride by reacting sulfur trioxide with a fluorinated precursor selected from the group consisting of hexafluoro-2,5-dihydrofuran, hexafluoro-2,5-dihydrothiophene, difluoro-2,5-dihydrothiophene-2,5-dione and tetrafluoro-2,5-dihydrothiophene-2-one. Also disclosed are the compounds difluoro-2,5-dihydrothiophene-2,5-dione and tetrafluoro-2,5-dihydrothiophene-2-one.

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