Dimethylformamide → HCID 10043629, compound

HRID 1351681Notes

Reaction equation

HRID 1351681 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[NH:9][CH:10]=[CH:11][N:12]=1.CN(C=O)C.[H-].[Na+].[CH3:20][Si:21]([CH3:28])([CH3:27])[CH2:22][CH2:23][O:24][CH2:25]Cl>C1COCC1>[Br:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[N:12]([CH2:25][O:24][CH2:23][CH2:22][Si:21]([CH3:28])([CH3:27])[CH3:20])[CH:11]=[CH:10][N:9]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 24758Sodium hydrideHCID 27242712-Chloromethyl 2-(trimethylsilyl)ethyl etherHCID 100594482-(2-bromophenyl)-1H-imidazole

Product 1

HCID 10043629HCID 10043629, compoundYield 94.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

2-(2-bromophenyl)-1H-imidazole (WO 9407486; 1.0 g, 4.48 mmol) was dissolved in THF (11 mL) and DMF (11 mL) and cooled to 0° C. Sodium hydride (60% dispersion in mineral oil, 197 mg, 4.93 mol) was added and the reaction stirred for 20 minutes. 2-(Trimethylsilyl)ethoxymethyl chloride (0.79 mL, 4.93 mmol) was added and the reaction stirred overnight at room temperature. The reaction was quenched with MeOH then partitioned between water and Et2O. The organic layer was dried (MgSO4) and concentrated in vacuo and the residue was purified by flash column chromatography to afford 2-(2-bromophenyl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-imidazole as an off-white solid (1.5 g).

Workup

  1. stirringthe reaction stirred overnight at room temperature
  2. customThe reaction was quenched with MeOH
  3. customthen partitioned between water and Et2O
  4. dry with materialThe organic layer was dried (MgSO4)
  5. concentrationconcentrated in vacuo
  6. customthe residue was purified by flash column chromatography

Sources & evidence

ORD record
ord-5407699fd7df4b1db45b9762d123687e
Source dataset
uspto-grants-2007_05
Patent number
US07217740B2

Reaction notes

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