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

HRID 1601043Notes

Reaction equation

HRID 1601043 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=O)C.CCOC(C)=O.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 1H-imidazole-4-acetic acid methyl ester hydrochloride (24.85 g, 0.141 mol) in 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 h. After this time, the reaction mixture was diluted with EtOAc (1 L) and water (350 mL). The organic phase was washed with sat. aqueous 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. aqueous 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-f80fc78aeacb4a0b9427e1802a9d03c8
Source dataset
uspto-grants-1999_11
Patent number
US05977134

Reaction notes

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