Perfluoro-phthalide → Tetrafluorophthalic anhydride

HRID 259949

Reaktionsgleichung

Reaktionsgleichung von HRID 259949
[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>FC(F)(F)C(O)=O>[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 2

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

Produkt 1

HCID 69545Tetrafluorophthalic anhydrideAusbeute 65 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6422Trifluoroacetic acidLösungsmittel

Versuchsvorschrift

Into a 200 ml glass reactor equipped with a reflux condenser and a stirrer, 50 g (0.207 mol) of the 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 50 ml of trifluoroacetic acid were charged, and the mixture was refluxed for 72 hours with vigorous stirring. Then, the reaction mixture was separated by distillation to obtain 29.6 g of tetrafluorophthalic anhydride. The yield was 65%.

Aufarbeitung

  1. customInto a 200 ml glass reactor equipped with a reflux condenser and a stirrer
  2. temperaturethe mixture was refluxed for 72 hours with vigorous stirring
  3. customThen, the reaction mixture was separated by distillation

Quellen und Nachweise

ORD-Eintrag
ord-a5447d4cd48543ae8d09bfc0e87669c2
Quelldatensatz
uspto-grants-1996_06
Patentnummer
US05523476

Verknüpfte Notizen

Wird geladen…