Imidazole → HCID 53724407, compound

HRID 465845Notes

Reaction equation

HRID 465845 reaction equation
[CH:1]([C:5]1[N:6]([CH2:13][C:14]2[CH:19]=[CH:18][C:17]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[C:26]([O:28][CH3:29])=[O:27])=[CH:16][CH:15]=2)[C:7]([CH2:11][OH:12])=[C:8]([Cl:10])[N:9]=1)=[CH:2][CH2:3][CH3:4].[Si:30](Cl)([C:33]([CH3:36])([CH3:35])[CH3:34])([CH3:32])[CH3:31].N1C=CN=C1>CN(C=O)C>[CH:1]([C:5]1[N:6]([CH2:13][C:14]2[CH:19]=[CH:18][C:17]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[C:26]([O:28][CH3:29])=[O:27])=[CH:16][CH:15]=2)[C:7]([CH2:11][O:12][Si:30]([C:33]([CH3:36])([CH3:35])[CH3:34])([CH3:32])[CH3:31])=[C:8]([Cl:10])[N:9]=1)=[CH:2][CH2:3][CH3:4]

Participants

5

Reactant 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 54315022HCID 54315022, compound

Product 1

HCID 53724407HCID 53724407, compoundYield 83.8%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

2-(But-1-en-1-yl)-1-[(2'-carbomethoxybiphenyl-4-yl)methyl]-4-chloro-5-(hydroxymethyl)-imidazole (1.4 g), t-butyldimethylsilyl chloride (0.55 g), and imidazole (0.5 g) were mixed and stirred in DMF (5 mL) for 18 hours at room temperature. Dilution with ethyl acetate and washing the organic phase with water followed by drying (MgSO4), evaporation of the solvent in vacuo, and flash chromatography in 3:1 hexane/ethyl acetate yielded 1.5 g of a clear oil. NMR (200 MHz, CDCl3) δ7.83 (d, 1H); 7.52 (t, 1H); 7.40 (t, 1H); 7.33-7.24 (m, 3H); 7.08 (d, 2H); 6.83 (d of t, 1H); 6.13 (d, 1H); 5.30 (s, 2H); 4.57 (s, 2H); 3.64 (s, 3H); 2.21 (quint., 2H); 1.04 (t, 3H); 0.86 (s, 9H); 0.05 (s, 6H).

Workup

  1. washDilution with ethyl acetate and washing the organic phase with water
  2. customby drying
  3. custom(MgSO4), evaporation of the solvent in vacuo, and flash chromatography in 3:1 hexane/ethyl acetate

Sources & evidence

ORD record
ord-300b6720a0604050993ff43493173ffa
Source dataset
uspto-grants-1992_10
Patent number
US05153197

Reaction notes

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