反应详情

温度

0 °C

Dissolve 4-[4-(4-Fluoro-3-trifluoromethyl-phenyl)-1H-imidazol-2-yl]-piperidine-1-carboxylic acid tert-butyl ester (860 mg, 2.08 mmoles) in diethyl ether (100 mL) under N2. Cool the solution to 0° C. in an ice bath, and add sodium hydride (1.1 equiv; 2.29 mmoles; 91.52 mg), followed by injecting methyl iodide (2.00 equiv; 4.16 mmoles; 259.12 μL). Stir the mixture for 1 hour at 0° C., and then warm to room temperature. Inject tetrahydrofuran (40 mL) into the above mixture, and then stir at room temperature overnight. Concentrate the mixture under reduced pressure, and then dissolve the residue in EtOAc. Wash with saturated aqueous sodium chloride. Purify the residue via silica gel chromatography, eluting with EtOAc:hexane (7:3) to offer 270 mg (30% yield) of a title compound.

1. temperaturewarm to room temperature
2. concentrationConcentrate the mixture under reduced pressure
3. dissolutiondissolve the residue in EtOAc
4. washWash with saturated aqueous sodium chloride
5. customPurify the residue via silica gel chromatography
6. washeluting with EtOAc:hexane (7:3)