Sodium hydride → 5,6-Dichloro-1-(3-nitro-benzyl)-2-(2,2,2-trifluoro-ethyl)-1H-benzoimidazole

HRID 2043268Notes

Reaction equation

HRID 2043268 reaction equation
[Cl:1][C:2]1[C:15]([Cl:16])=[CH:14][C:5]2[NH:6][C:7]([CH2:9][C:10]([F:13])([F:12])[F:11])=[N:8][C:4]=2[CH:3]=1.[H-].[Na+].[N+:19]([C:22]1[CH:23]=[C:24]([CH:27]=[CH:28][CH:29]=1)[CH2:25]Br)([O-:21])=[O:20]>CN(C=O)C>[Cl:16][C:15]1[C:2]([Cl:1])=[CH:3][C:4]2[N:8]([CH2:25][C:24]3[CH:27]=[CH:28][CH:29]=[C:22]([N+:19]([O-:21])=[O:20])[CH:23]=3)[C:7]([CH2:9][C:10]([F:12])([F:13])[F:11])=[N:6][C:5]=2[CH:14]=1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 77568Benzene, 1-(bromomethyl)-3-nitro-HCID 116519105,6-dichloro-2-(2,2,2-trifluoro-ethyl)-1H-benzimidazole

Product 1

HCID 444301795,6-Dichloro-1-(3-nitro-benzyl)-2-(2,2,2-trifluoro-ethyl)-1H-benzoimidazole

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To 5,6-dichloro-2-(2,2,2-trifluoro-ethyl)-1H-benzimidazole (355 mg) in DMF (5 mL) was added sodium hydride (110 mg of 60% in oil) and 3-nitrobenzyl bromide (596 mg). The resulting mixture was stirred at room temperature overnight. The reaction mixture was quenched with water, extracted with EtOAc, and dried over Na2SO4. The crude product was purified by silica gel chromatography (10%-40% EtOAc/hexanes) to yield the title compound as a red solid.

Workup

  1. customThe reaction mixture was quenched with water
  2. extractionextracted with EtOAc
  3. dry with materialdried over Na2SO4
  4. customThe crude product was purified by silica gel chromatography (10%-40% EtOAc/hexanes)

Sources & evidence

ORD record
ord-8e67b2713bcc409cb30761ccd03a629e
Source dataset
uspto-grants-2013_11
Patent number
US08586616B2

Reaction notes

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