反应详情

A mixture of ethyl 3-[3-ethoxy-1-(4-hydroxy-3-methoxybenzyl)-1H-pyrazol-4-yl]propionate (505 mg), 3-picolyl chloride hydrochloride (476 mg), potassium carbonate (601 mg), and N,N-dimethylformamide (10 ml) was stirred at room temperature overnight. The reaction mixture was poured into water, which was extracted with ethyl acetate. The ethyl acetate layer was washed with water, then, with saturated aqueous sodium chloride solution, and dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and ethyl 3-[3-ethoxy-1-[3-methoxy-4-(3-pyridylmethoxy)benzyl]-1H-pyrazol-4-yl]propionate (531 mg, yield: 83%) was obtained as a colorless oily substance from the fraction eluted with ethyl acetate.

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