反应详情

To a solution of phenyl-methanol (20.5 g, 190 mmol) in N,N-dimethylformamide (200 mL) was added sodium hydride (7.6 g, 190 mmol) under nitrogen atmosphere on an ice bath (0° C.), which was stirred for 30 minutes at room temperature. 2,5-Dibromopyridine was then added thereto on the ice bath (0° C.), and stirred for 60 minutes at room temperature. The reaction mixture was partitioned into water and ethyl acetate on the ice bath (0° C.). The organic layer was washed with water and saturated aqueous sodium chloride, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under a reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:heptane=1:20 then 1:10) to obtain the title compound (15.1 g, 90%).

1. customThe reaction mixture was partitioned into water and ethyl acetate on the ice bath (0° C.)
2. washThe organic layer was washed with water and saturated aqueous sodium chloride
3. dry with materialdried over anhydrous magnesium sulfate
4. customthe solvent was evaporated under a reduced pressure
5. customThe residue was purified by silica gel column chromatography (ethyl acetate