Reaktionsgleichung
[N:1]1[CH:6]=[CH:5][C:4]([C:7]([OH:9])=O)=[C:3]([C:10]([OH:12])=[O:11])[CH:2]=1>C(OC(=O)C)(=O)C>[N:1]1[CH:6]=[CH:5][C:4]2[C:7]([O:12][C:10](=[O:11])[C:3]=2[CH:2]=1)=[O:9]Komponenten
3
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A mixture of 3,4-pyridine-dicarboxylic acid (15 g) and acetic anhydride (30 ml) is refluxed for 2 hours. The acetic anhydride in excess is distilled off and the residue is purified by sublimation (123° C. at 3 mmHg) to give 10.1 g of 3,4-pyridine-dicarboxylic acid anhydride, a white solid, m.p. 74-76° C.
Aufarbeitung
- temperatureis refluxed for 2 hours
- distillationThe acetic anhydride in excess is distilled off
- customthe residue is purified by sublimation (123° C. at 3 mmHg)
Quellen und Nachweise
- ORD-Eintrag
- ord-295789ffbf0143ab9a2269b289a48499
- Quelldatensatz
- uspto-grants-2000_03
- Patentnummer
- US06034092
Verknüpfte Notizen
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