Acetic Anhydride → HCID 18945439, Verbindung
Reaktionsgleichung
[OH:1][CH2:2][C:3]1[CH:4]=[C:5]([CH:10]=[C:11]([N:13]2[CH:17]=[CH:16][CH:15]=[CH:14]2)[CH:12]=1)[C:6]([O:8][CH3:9])=[O:7].[C:18](OC(=O)C)(=[O:20])[CH3:19]>N1C=CC=CC=1>[C:18]([O:1][CH2:2][C:3]1[CH:4]=[C:5]([CH:10]=[C:11]([N:13]2[CH:17]=[CH:16][CH:15]=[CH:14]2)[CH:12]=1)[C:6]([O:8][CH3:9])=[O:7])(=[O:20])[CH3:19]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of methyl 3-hydroxymethyl-5-(pyrrol-1-yl)benzoate (4.0 g) in pyridine (40 ml) was added acetic anhydride (4.9 ml) under ice cooling. After being stirred for 3 hours under ice cooling, the reaction mixture was poured into ice-water and the product was extracted with diethyl ether. The diethyl ether extracts were washed with water, 1N-hydrochloric acid and brine and dried over magnesium sulfate. The solvent was evaporated in vacuo and the residue was purified by column chromatography on silica gel eluting with a mixture of hexane and ethyl acetate (5:1). The eluted fractions containing the desired product were collected and evaporated in vacuo to afford methyl 3-acetoxymethyl-5-(pyrrol-1-yl)benzoate (4.68 g).