Sodium Carbonate → Tetrafluorophthalic anhydride

HRID 259944

Reaktionsgleichung

Reaktionsgleichung von HRID 259944
[F:1][C:2]1[C:10]([F:11])=[C:9]([F:12])[C:8]([F:13])=[C:4]([C:5](F)=[O:6])[C:3]=1[C:14](F)=[O:15].FC1(F)C2C(=C(F)C(F)=C(F)C=2F)C(=O)[O:19]1.C(=O)([O-])[O-].[Na+].[Na+]>>[F:1][C:2]1[C:10]([F:11])=[C:9]([F:12])[C:8]([F:13])=[C:4]2[C:5](=[O:19])[O:6][C:14](=[O:15])[C:3]=12

Komponenten

4

Edukt 3

HCID 10340Sodium CarbonateHCID 11032047Perfluoro-phthalideHCID 110756133,4,5,6-tetrafluorobenzene-1,2-dicarbonyl Fluoride

Produkt 1

HCID 69545Tetrafluorophthalic anhydrideAusbeute 83,2 %

Versuchsvorschrift

Into a 500 ml glass reactor equipped with a reflux condenser and a stirrer, a 100 g (0.413 mol) of a mixture (1:1) of the 3,4,5,6-tetrafluorophthaloyldifluoride and the 3,3,4,5,6,7-hexafluoro-1-[3H]-isobenzofuranone of Example 2, and 43.8 g (0.413 mol) of sodium carbonate were charged, and the mixture was reacted at 130° C. for 5 hours with vigorous stirring. Then, the reaction mixture was subjected to distillation to obtain 75.6 g of tetrafluorophthalic anhydride. The yield was 83.2%.

Aufarbeitung

  1. customInto a 500 ml glass reactor equipped with a reflux condenser and a stirrer
  2. customthe mixture was reacted at 130° C. for 5 hours with vigorous stirring
  3. distillationThen, the reaction mixture was subjected to distillation

Quellen und Nachweise

ORD-Eintrag
ord-49055adee039469aa0d9ae16ba0de6bb
Quelldatensatz
uspto-grants-1996_06
Patentnummer
US05523476

Verknüpfte Notizen

Wird geladen…