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Benzimidazole, 2-butyl- → 2-n-Butyl-1-{(5'-chloro-2'-cyanobiphenyl-4-yl)methyl]benzimidazole

HRID 488002
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 488002
[CH2:1]([C:5]1[NH:6][C:7]2[CH:13]=[CH:12][CH:11]=[CH:10][C:8]=2[N:9]=1)[CH2:2][CH2:3][CH3:4].[H-].[Na+].Br[CH2:17][C:18]1[CH:23]=[CH:22][C:21]([C:24]2[CH:31]=[C:30]([Cl:32])[CH:29]=[CH:28][C:25]=2[C:26]#[N:27])=[CH:20][CH:19]=1>CN(C)C=O>[CH2:1]([C:5]1[N:6]([CH2:17][C:18]2[CH:23]=[CH:22][C:21]([C:24]3[CH:31]=[C:30]([Cl:32])[CH:29]=[CH:28][C:25]=3[C:26]#[N:27])=[CH:20][CH:19]=2)[C:7]2[CH:13]=[CH:12][CH:11]=[CH:10][C:8]=2[N:9]=1)[CH2:2][CH2:3][CH3:4]
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Komponenten

5

Edukt 3

HCID 22122Benzimidazole, 2-butyl-HCID 24758Sodium hydrideHCID 224180002-(4-Bromomethylphenyl)4-chlorobenzonitrile

Produkt 1

HCID 224180032-n-Butyl-1-{(5'-chloro-2'-cyanobiphenyl-4-yl)methyl]benzimidazole

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel2×

Versuchsvorschrift

522 g of 2-n-butylbenzimidazole was dissolved in 10 ml of dimethylformamide and dropwise added to 130 g of sodium hydride. The mixture was stirred at room temperature for 30 min, and 920 mg of 2-(4-bromomethylphenyl)-4-chlorobenzonitrile dissolved in 10 ml of dimethylformamide was dropwise added thereto. The mixture was stirred at room temperature for 10 min, and the reaction mixture was filtered. The filtrate was concentrated and water and ethyl acetate were added to the residue. The organic phase was separated, dried over anhydrous magnesium sulfate and then concentrated. The residue was purified by column chromatography (chloroform:ethanol=98:2) (yield: 1.12 g).

Aufarbeitung

  1. additionwas dropwise added
  2. stirringThe mixture was stirred at room temperature for 10 min
  3. filtrationthe reaction mixture was filtered
  4. concentrationThe filtrate was concentrated
  5. additionwater and ethyl acetate were added to the residue
  6. customThe organic phase was separated
  7. dry with materialdried over anhydrous magnesium sulfate
  8. concentrationconcentrated
  9. customThe residue was purified by column chromatography (chloroform:ethanol=98:2) (yield: 1.12 g)

Quellen und Nachweise

ORD-Eintrag
ord-a6dc275cc7844a2a9de85e1597442ee8
Quelldatensatz
uspto-grants-1994_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05298518

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