Methyl iodide → 4-(tert-butyl-dimethyl-silanyloxymethyl)-1-(4-fluoro-phenyl)-2-methyl-1H-imidazole

HRID 491291Notes

Reaction equation

[C:1]([SiH2:5][O:6][C:7]([CH3:21])([CH3:20])[C:8]1[N:9]=[CH:10][N:11]([C:13]2[CH:18]=[CH:17][C:16]([F:19])=[CH:15][CH:14]=2)[CH:12]=1)([CH3:4])([CH3:3])[CH3:2].[CH2:22]([Li])CCC.IC>C1COCC1.CCCCCC>[C:1]([SiH2:5][O:6][C:7]([CH3:21])([CH3:20])[C:8]1[N:9]=[C:10]([CH3:22])[N:11]([C:13]2[CH:14]=[CH:15][C:16]([F:19])=[CH:17][CH:18]=2)[CH:12]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: -25 °C

Procedure

4-(tert-Butyl-dimethyl-silanyloxymethyl)-1-(4-fluoro-phenyl)-1H-imidazole is dissolved in THF and cooled to −78° C. n-Butyl lithium in hexane is added dropwise. The reaction mixture is warmed up to −25° C., kept at −25° C. for 10 min and then cooled again to −78° C. Iodomethane is added dropwise. The reaction mixture is slowly warmed up to room temperature and stirred at room temperature overnight. The desired compound 4-(tert-butyl-dimethyl-silanyloxymethyl)-1-(4-fluoro-phenyl)-2-methyl-1H-imidazole is obtained.

Workup

additionis added dropwise
temperaturecooled again to −78° C
temperatureThe reaction mixture is slowly warmed up to room temperature

Sources & evidence

ORD record: ord-5b8be1e6b86e4a87acec0827b6b5f1d7
Source dataset: uspto-grants-2009_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07531529B2

Reaction notes

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