Water → methyl (4-formyl-2-phenyl-1H-imidazol-1-yl)(phenyl)acetate
Reaktionsgleichung
[C:1]1([C:7]2[NH:8][CH:9]=[C:10]([CH:12]=[O:13])[N:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(=O)([O-])[O-].[K+].[K+].Br[CH:21]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:22]([O:24][CH3:25])=[O:23].O>CN(C)C=O>[CH:12]([C:10]1[N:11]=[C:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[N:8]([CH:21]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[C:22]([O:24][CH3:25])=[O:23])[CH:9]=1)=[O:13]Komponenten
6
Edukt 4
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 85 °C
Versuchsvorschrift
To a solution of 2-phenyl-1H-imidazole-4-carbaldehyde (1.73 g) in N,N-dimethylformamide (35 mL) were added potassium carbonate (2.78 g) and methyl bromo(phenyl)acetate (2.53) and the mixture was stirred at 85° C. for 3 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=1:1→3:7) and crystallized from diisopropyl ether to give the title compound as colorless crystals (yield 814 mg, yield 25%).
Aufarbeitung
- extractionthe mixture was extracted with ethyl acetate
- washThe extract was washed with saturated brine
- dry with materialdried over anhydrous magnesium sulfate
- concentrationconcentrated under reduced pressure
- customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=1:1→3:7)
- customcrystallized from diisopropyl ether
Quellen und Nachweise
- ORD-Eintrag
- ord-d47b0af8215e4fa18ad658a14d154973
- Quelldatensatz
- uspto-grants-2012_12
- Patentnummer
- US08334301B2
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