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2-Methylimidazole → 1-(4-chloro-2-methoxybenzyl)-2-methyl-1H-imidazole

HRID 272745
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 272745
[CH3:1][C:2]1[NH:3][CH:4]=[CH:5][N:6]=1.[H-].[Na+].Br[CH2:10][C:11]1[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][C:12]=1[O:18][CH3:19]>CN(C=O)C.C(OCC)(=O)C>[Cl:17][C:14]1[CH:15]=[CH:16][C:11]([CH2:10][N:3]2[CH:4]=[CH:5][N:6]=[C:2]2[CH3:1])=[C:12]([O:18][CH3:19])[CH:13]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 3

HCID 127492-MethylimidazoleHCID 24758Sodium hydrideHCID 223274741-(Bromomethyl)-4-chloro-2-methoxybenzene

Produkt 1

HCID 570132771-(4-chloro-2-methoxybenzyl)-2-methyl-1H-imidazoleAusbeute 40 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittel
HCID 8857
Ethyl Acetate
Lösungsmittel

Versuchsvorschrift

2-Methyl imidazole (45 mg, 0.55 mmol) was dissolved in DMF. Sodium hydride (60 mg, 1.5 mmol) was added slowly. The mixture was stirred at room temperature until bubbling ceased. 1-Bromomethyl-4-chloro-2-methoxy-benzene (117 mg, 0.5 mmol) was added and the mixture was heated to 100° C. for 16 hours. The mixture was cooled to room temperature, diluted with ethyl acetate, and washed with water and with brine. The organic layer was dried (MgSO4), filtered, and concentrated under vacuum. The residue was purified by flash column chromatography on silica gel (1:1 hexanes/ethyl acetate) to provide 47 mg (40%) of the title compound. MS (ESI) m/e 237 (M+H)+.

Aufarbeitung

  1. customuntil bubbling
  2. temperaturethe mixture was heated to 100° C. for 16 hours
  3. temperatureThe mixture was cooled to room temperature
  4. washwashed with water and with brine
  5. dry with materialThe organic layer was dried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated under vacuum
  8. customThe residue was purified by flash column chromatography on silica gel (1:1 hexanes/ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-499cdbbb45b546f9b3dd8b3932a6f146
Quelldatensatz
uspto-grants-2008_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07456169B2

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