反应详情

2-Bromomethyl-3-nitropyridine (100 mg, 0.456 mmol) prepared in Step 2 was added at room temperature to a solution of 4-fluorophenol (56 mg, 0.502 mmol) and potassium carbonate (189 mg, 1.37 mmol) in N,N-dimethylformamide (3 ml) and then stirred for 3 hours. The reaction mixture was diluted with ethyl acetate (10 ml), washed with a saturated sodium bicarbonate solution, dried on anhydrous magnesium sulfate, and then concentrated under reduced pressure. The resulting residue was purified with silica gel column chromatography (dichloromethane/n-hexane=2/1, v/v) to give 71 mg of the titled compound as yellow solid.

1. washwashed with a saturated sodium bicarbonate solution
2. dry with materialdried on anhydrous magnesium sulfate
3. concentrationconcentrated under reduced pressure
4. customThe resulting residue was purified with silica gel column chromatography (dichloromethane/n-hexane=2/1, v/v)