Triethylamine → 1-(triphenylmethyl)-1H-Imidazole-4-acetic acid methyl ester

HRID 1068424Notes

Reaction equation

HRID 1068424 reaction equation
Cl.[CH3:2][O:3][C:4](=[O:11])[CH2:5][C:6]1[N:7]=[CH:8][NH:9][CH:10]=1.C(N(CC)CC)C.[C:19]1([C:25](Br)([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1>CN(C)C=O.C(OCC)(=O)C.O>[CH3:2][O:3][C:4](=[O:11])[CH2:5][C:6]1[N:7]=[CH:8][N:9]([C:25]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)([C:32]2[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=2)[C:26]2[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=2)[CH:10]=1

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 11692BromotriphenylmethaneHCID 178499561HCID 178499561, compound

Product 1

HCID 105239671-(triphenylmethyl)-1H-Imidazole-4-acetic acid methyl ester

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of the product from Step A (24.85 g, 0.141 mol) in dimethyl formamide (DMF) (115 ml) was added triethylamine (57.2 ml, 0.412 mol) and triphenylmethyl bromide(55.3 g, 0.171 mol) and the suspension was stirred for 24 hr. After this time, the reaction mixture was diluted with ethyl acetate (EtOAc) (1l) and water (350 ml). The organic phase was washed with sat. aq. NaHCO3 (350 ml), dried (Na2SO4) and evaporated in vacuo. The residue was purified by flash chromatography (SiO2, 0-100% ethyl acetate in hexanes; gradient elution) to provide the title compound as a white solid.

Workup

  1. washThe organic phase was washed with sat. aq. NaHCO3 (350 ml)
  2. dry with materialdried (Na2SO4)
  3. customevaporated in vacuo
  4. customThe residue was purified by flash chromatography (SiO2, 0-100% ethyl acetate in hexanes; gradient elution)

Sources & evidence

ORD record
ord-90b6a7fdc27148aa8e2ed2b6b89fc2ae
Source dataset
uspto-grants-2001_06
Patent number
US06248756B1

Reaction notes

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