Journal of Fluorine Chemistry p. 339 - 343 (1990)
Update date:2022-07-29
Topics:
Krespan, Carl G.
Difluoromaleic anhydride is obtained in good yield by reaction of either hexafluoro-2,5-dihydrofuran or hexafluoro-2,5-dihydrothiophene with sulfur trioxide.Hexafluoro-2,5-dihydrothioyphene is prepared from sulfur and commercially available hexafluorocyclobutene, so its conversion to difluoromaleic anhydride in one step makes the latter readily available as well.
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