1-[2-(4-isopropyl-phenyl)-7-methoxy-1-(2-methoxy-ethyl)-1H-benzoimidazol-5-yl]-ethanone → 1-[2-(4-Isopropyl-phenyl)-7-methoxy-1-(2-methoxy-ethyl)-1H-benzoimidazol-5-yl]-1-phenyl-ethanol

HRID 1661931Notes

Reaction equation

HRID 1661931 reaction equation
[CH:1]([C:4]1[CH:9]=[CH:8][C:7]([C:10]2[N:14]([CH2:15][CH2:16][O:17][CH3:18])[C:13]3[C:19]([O:26][CH3:27])=[CH:20][C:21]([C:23](=[O:25])[CH3:24])=[CH:22][C:12]=3[N:11]=2)=[CH:6][CH:5]=1)([CH3:3])[CH3:2].[C:28]1([Mg]Br)[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1>C1COCC1>[CH:1]([C:4]1[CH:9]=[CH:8][C:7]([C:10]2[N:14]([CH2:15][CH2:16][O:17][CH3:18])[C:13]3[C:19]([O:26][CH3:27])=[CH:20][C:21]([C:23]([C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=4)([OH:25])[CH3:24])=[CH:22][C:12]=3[N:11]=2)=[CH:6][CH:5]=1)([CH3:3])[CH3:2]

Participants

4

Reactant 2

HCID 577720611-[2-(4-isopropyl-phenyl)-7-methoxy-1-(2-methoxy-ethyl)-1H-benzoimidazol-5-yl]-ethanoneHCID 178418255HCID 178418255, compound

Product 1

HCID 577720011-[2-(4-Isopropyl-phenyl)-7-methoxy-1-(2-methoxy-ethyl)-1H-benzoimidazol-5-yl]-1-phenyl-ethanolYield 171%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of 163 mg (0.445 mmol) 1-[2-(4-isopropyl-phenyl)-7-methoxy-1-(2-methoxy-ethyl)-1H-benzoimidazol-5-yl]-ethanone in 2 ml THF is treated with excess phenylmagnesiumbromide (prepared from 112 μl bromobenzene and 26 mg magnesium in 5 ml diethyl ether). The resulting mixture is stirred at room temperature for 1 h. The reaction mixture is poured on water and extracted (3×) with ethyl acetate. The combined organic layers are washed with water (2×) and brine, dried over MgSO4, filtered and concentrated in vacuo. The residue is purified by flash-chromatography on silica gel (hexane:EtOAc=2:1) to afford 109 mg of the title compound as an oil.

Workup

  1. additionThe reaction mixture is poured on water
  2. extractionextracted (3×) with ethyl acetate
  3. washThe combined organic layers are washed with water (2×) and brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue is purified by flash-chromatography on silica gel (hexane:EtOAc=2:1)

Sources & evidence

ORD record
ord-1d9426bb8c784002a37208048359482b
Source dataset
uspto-grants-2011_10
Patent number
US08030497B2

Reaction notes

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