反应详情

2-Chloromethyl-6-(2-fluorobenzyloxy)naphthalene (540 mg) and ethyl 3-(3-phenyl-1H-pyrazol-4-yl]propionate (390 mg) were dissolved in N,N-dimethylformamide (10 ml). Sodium hydride (60%, oily, 70 mg) was added to the solution at 0° C., which was stirred at room temperature for two hours. The reaction mixture was poured into saturated aqueous sodium chloride solution, which was extracted with ethyl acetate. The ethyl acetate layer was washed with water, then with saturated aqueous sodium chloride solution, dried (MgSO4), and concentrated. The residue was subjected to silica gel column chromatography, and ethyl 3-[1-[6-(2-fluorobenzyloxy)-2-naphthylmethyl]-3-phenyl-1H-pyrazole-4-yl]propionate (0.58 g, yield: 72%) was obtained as a colorless oily substance from the fraction eluted with ethyl acetate-hexane (1:4, volume ratio).

1. extractionwas extracted with ethyl acetate
2. washThe ethyl acetate layer was washed with water
3. dry with materialwith saturated aqueous sodium chloride solution, dried (MgSO4)
4. concentrationconcentrated