反应详情

温度

120 °C

A mixture of 3-methyl-5-phenyl-1H-pyrazole (760 mg, 5.0 mmol), [4-(chloromethyl)phenyl]methanol (850 mg, 5.43 mmol), potassium carbonate (1.38 g, 10.0 mmol) and N,N-dimethylformamide (20 mL) was stirred at 120° C. for 1 hr. The reaction mixture was poured into 10% aqueous citric acid solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was dried using a Presep Dehydration tube (manufactured by Wako Pure Chemical Industries, Ltd.) and concentrated. The residue was purified by silica gel column chromatography (10%-80% ethyl acetate/hexane) to give the title compound (850 mg, yield 61%) as colorless crystals. 1H NMR (CDCl3) δ: 2.21 (3H, s), 4.66 (2H, s), 5.33 (2H, s), 6.38 (1H, s), 7.13 (2H, d, J=8.1 Hz), 7.27-7.34 (3H, m), 7.34-7.42 (2H, m), 7.77-7.83 (2H, m).

1. extractionthe mixture was extracted with ethyl acetate
2. dry with materialThe ethyl acetate layer was dried
3. concentrationconcentrated
4. customThe residue was purified by silica gel column chromatography (10%-80% ethyl acetate/hexane)