3-Chlorophthalic anhydride → 3-Fluorophthalic anhydride
Reaktionsgleichung
Cl[C:2]1[CH:12]=[CH:11][CH:10]=[C:4]2[C:5]([O:7][C:8](=[O:9])[C:3]=12)=[O:6].[F-:13].[K+]>>[F:13][C:2]1[CH:12]=[CH:11][CH:10]=[C:4]2[C:5]([O:7][C:8](=[O:9])[C:3]=12)=[O:6]Komponenten
3
Reaktionsbedingungen
- Temperatur
- 235 °C
Versuchsvorschrift
A mixture of 20 parts of 3-chlorophthalic anhydride, and 20 parts of anhydrous potassium fluoride was heated and maintained at about 235° C. for about 9 hours. The reaction mixture was then cooled and the crude product removed by vaccum distillation and recrystallized from chloroform to yield 12.65 parts of purified 3-fluorophthalic anhydride (69% yield).
Aufarbeitung
- temperaturewas heated
- temperatureThe reaction mixture was then cooled
- customthe crude product removed by vaccum distillation
- customrecrystallized from chloroform
Quellen und Nachweise
- ORD-Eintrag
- ord-42b2a6f74dd5429695d292be7a7d85bf
- Quelldatensatz
- uspto-grants-1982_08
- Patentnummer
- US04343951
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