782-90-1Relevant academic research and scientific papers
AN ABBREVIATED ROUTE TO DIFLUOROMALEIC ANHYDRIDE
Krespan, Carl G.
, p. 339 - 343 (1990)
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.
