Water → Methyl 2-butyl-1-[(2'-cyanobiphenyl-4-yl)methyl]benzimidazole-4-carboxylate

HRID 1655452Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1655452
[CH2:1]([C:5]1[NH:6][C:7]2[CH:13]=[CH:12][CH:11]=[C:10]([C:14]([O:16][CH3:17])=[O:15])[C:8]=2[N:9]=1)[CH2:2][CH2:3][CH3:4].[H-].[Na+].[C:20]([C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=1[C:28]1[CH:35]=[CH:34][C:31]([CH2:32]Cl)=[CH:30][CH:29]=1)#[N:21].O>CN(C=O)C>[CH2:1]([C:5]1[N:6]([CH2:32][C:31]2[CH:30]=[CH:29][C:28]([C:23]3[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=3[C:20]#[N:21])=[CH:35][CH:34]=2)[C:7]2[CH:13]=[CH:12][CH:11]=[C:10]([C:14]([O:16][CH3:17])=[O:15])[C:8]=2[N:9]=1)[CH2:2][CH2:3][CH3:4]

Komponenten

6

Edukt 4

HCID 962WaterHCID 24758Sodium hydrideHCID 14987323Methyl 2-butyl-1H-benzimidazole-4-carboxylateHCID 217117564'-(chloromethyl)-[1,1'-Biphenyl]-2-carbonitrile

Produkt 1

HCID 19792178Methyl 2-butyl-1-[(2'-cyanobiphenyl-4-yl)methyl]benzimidazole-4-carboxylateAusbeute 84,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of methyl 2-butylbenzimidazole-7-carboxylate (1.5 g) in DMF (15 ml) was added sodium hydride (60% oil, 0.13 g) under ice-cooling. The mixture was stirred for 20 minutes and there was added 4-(2-cyanophenyl)benzyl chloride (1.5 g). The resultant mixture was stirred for further 5 hours at room temperature and there was added water, followed by extraction with ethyl acetate. The organic layer was washed with water and dried. The solvent was evaporated to dryness, and the residue was purified by column chromatography on silica gel to give a pale yellow oil (2.3 g, 82%).

Aufarbeitung

  1. temperaturecooling
  2. extractionfollowed by extraction with ethyl acetate
  3. washThe organic layer was washed with water
  4. customdried
  5. customThe solvent was evaporated to dryness
  6. customthe residue was purified by column chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-769cf82ef30c4ec4ae3819443034eb3a
Quelldatensatz
uspto-grants-1993_10
Patentnummer
US05250554

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