Acetic Anhydride → 1-Acetyl-4-bromo-1H-indole-3-carbaldehyde
Reaktionsgleichung
[Br:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]([CH:11]=[O:12])=[CH:5][NH:6]2.[C:13](OC(=O)C)(=[O:15])[CH3:14]>>[C:13]([N:6]1[C:7]2[C:3](=[C:2]([Br:1])[CH:10]=[CH:9][CH:8]=2)[C:4]([CH:11]=[O:12])=[CH:5]1)(=[O:15])[CH3:14]Komponenten
3
Versuchsvorschrift
4-Bromo-1H-indole-3-carbaldehyde (4.0 g, 17.8 mmol) was stirred in acetic anhydride (20 mL) at reflux for 4 h. The reaction was cooled and concentrated in vacuo. Cold MeOH was added to precipitate a white solid, which was collected by filtration to give 3.5 g (74%) of 1-acetyl-4-bromo-1H-indole-3-carbaldehyde. MS (ES) [m+H] calc'd for C11H8BrNO2, 266, 268; found 266, 268.
Aufarbeitung
- temperatureat reflux for 4 h
- temperatureThe reaction was cooled
- concentrationconcentrated in vacuo
- additionCold MeOH was added
- customto precipitate a white solid, which
- filtrationwas collected by filtration
Quellen und Nachweise
- ORD-Eintrag
- ord-855426df7db447ce9db464b7678926c2
- Quelldatensatz
- uspto-grants-2012_02
- Patentnummer
- US08119655B2
Notizen zur Reaktion
Wird geladen…