Acetic Anhydride → HCID 85612101, Verbindung
Reaktionsgleichung
[OH:1][C:2]1[CH:3]=[C:4]([C:14]([OH:16])=[O:15])[C:5]([C:11]([OH:13])=O)=[CH:6][C:7]=1[C:8]([OH:10])=[O:9].[C:17](OC(=O)C)(=[O:19])[CH3:18]>>[C:17]([O:1][C:2]1[C:7]([C:8]([OH:10])=[O:9])=[CH:6][C:5]2[C:11](=[O:13])[O:16][C:14](=[O:15])[C:4]=2[CH:3]=1)(=[O:19])[CH3:18]Komponenten
3
Versuchsvorschrift
4-Hydroxy-benzene-1,2,5-tricarboxylic acid (4.1 g, 18.1 mmol), prepared according to J. Am. Chem. Soc. (1949) 71, 11, was treated with acetic anhydride (50 mL) and heated at reflux for 5 hours. The mixture was allowed to cool to room temperature and then concentrated under reduced pressure. The orange-pink residue was washed with diethyl ether (3×30 mL) and dried under reduced pressure at room temperature overnight to provide the title compound (1.71 g, 38%).
Aufarbeitung
- temperatureheated
- temperatureat reflux for 5 hours
- concentrationconcentrated under reduced pressure