4-Hydroxybenzoic Acid → Benzoic acid, 4-(acetyloxy)-
Reaktionsgleichung
[OH:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1.[C:11](Cl)(=[O:13])[CH3:12]>C1C=CC=CC=1>[C:11]([O:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1)(=[O:13])[CH3:12]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of 20 g. of 4-hydroxybenzoic acid in 200 ml. of benzene and 40 ml. of acetyl chloride is refluxed for 3 hours. Solvent and excess acetyl chloride are evaporated. The mixture is dissolved in methanol (150 ml.) and water (20 ml.) added; after 15 minutes, addition of more water results in the precipitation of 4-acetoxy benzoic acid, m.p. 192°-193° C.
Aufarbeitung
- customSolvent and excess acetyl chloride are evaporated
- dissolutionThe mixture is dissolved in methanol (150 ml.)
- additionwater (20 ml.) added
- additionaddition of more water
Quellen und Nachweise
- ORD-Eintrag
- ord-97e6103d3157480888b34d018a955edc
- Quelldatensatz
- uspto-grants-1979_04
- Patentnummer
- US04151297
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