Sodium hydride → 5-amino-1-(2-chlorobenzyl)-7-(trifluoromethyl)-1,3-dihydro-2H-benzimidazol-2-one

HRID 495620Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 495620
[Cl:1][C:2]1[CH:26]=[CH:25][CH:24]=[CH:23][C:3]=1[CH2:4][N:5]([C:11]1[C:16]([C:17]([F:20])([F:19])[F:18])=[CH:15][C:14]([NH2:21])=[CH:13][C:12]=1[NH2:22])[C:6](=[O:10])OCC.[H-].[Na+].C(=O)(O)[O-].[Na+]>C(O)C>[NH2:21][C:14]1[CH:15]=[C:16]([C:17]([F:18])([F:20])[F:19])[C:11]2[N:5]([CH2:4][C:3]3[CH:23]=[CH:24][CH:25]=[CH:26][C:2]=3[Cl:1])[C:6](=[O:10])[NH:22][C:12]=2[CH:13]=1

Komponenten

5

Edukt 3

HCID 24758Sodium hydrideHCID 516892Sodium BicarbonateHCID 20827733Ethyl 2-chlorobenzyl[2,4-diamino-6-(trifluoromethyl)phenyl]carbamate

Produkt 1

HCID 223273745-amino-1-(2-chlorobenzyl)-7-(trifluoromethyl)-1,3-dihydro-2H-benzimidazol-2-oneAusbeute 61 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

Ethyl 2-chlorobenzyl[2,4-diamino-6-(trifluoromethyl)phenyl]carbamate (85.6 mg) was dissolved in ethanol (10 ml), and to the solution was added sodium hydride (17.7 mg). The reaction mixture was heated at reflux for 24 hours. After allowing to cool, to the reaction mixture was added saturated aqueous sodium bicarbonate solution, and the mixture was extracted 4 times with chloroform. The organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated in vacuo. The resultant residue was purified by preparative TLC (2 mm, 20×20 cm, CHCl3-methanol=5:1) to give the title compound (46.0 mg).

Aufarbeitung

  1. temperatureThe reaction mixture was heated
  2. temperatureat reflux for 24 hours
  3. temperatureto cool, to the reaction mixture
  4. extractionthe mixture was extracted 4 times with chloroform
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated in vacuo
  8. customThe resultant residue was purified by preparative TLC (2 mm, 20×20 cm, CHCl3-methanol=5:1)

Quellen und Nachweise

ORD-Eintrag
ord-5f92d9fbca3e4bc7aa638c6258538e88
Quelldatensatz
uspto-grants-2005_09
Patentnummer
US06939887B2

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