反应详情

To a solution of [2-(4-fluoro-3-methoxyphenyl)ethyl]carbamic acid t-butyl ester (795 mg) in N,N-dimethylformamide (6 mL) was added 60% sodium hydride (154 mg) at room temperature. After stirring for 1 hour, methyl iodide (0.55 mL) was added dropwise and the solution was stirred for 14 hours. Water was added cautiously by small amounts, and after extraction with ethyl acetate, the solution was washed with water and saturated sodium chloride water. The residue that was obtained upon removing the solvent by evaporation was purified by silica gel column chromatography (hexane/ethyl acetate), and the title compound (506 mg) was obtained as a colorless oily matter.

1. stirringthe solution was stirred for 14 hours
2. extractionafter extraction with ethyl acetate
3. washthe solution was washed with water and saturated sodium chloride water
4. customThe residue that was obtained
5. customupon removing the solvent
6. customby evaporation
7. customwas purified by silica gel column chromatography (hexane/ethyl acetate)