反应详情

A solution of 5-(3-(piperidin-4-ylidenemethyl)phenoxy)-2-(trifluoromethyl)pyridine hydrochloride (0.100 g), phenyl pyridazin-3-ylcarbamate (0.070 g, 1.2 equiv), and triethylamine (0.083 mL, 2.2 equiv) in dimethyl sulfoxide (2 mL, 0.13 M) was heated to 65° C. for 2 h. The reaction was cooled to room temperature. Water was added and the mixture was extracted with ethyl acetate (3×). The combined organic extracts was washed with water and brine, dried over magnesium sulfate, filtered, and concentrated. The residue was purified by silica gel chromatography (0-100% ethyl acetate/dichloromethane) to give the title compound as a white foam (0.089 g, 72% yield). 1H NMR (400 MHz, CDCl3) δ ppm 2.46 (2H, t, J=5.5 Hz), 2.56 (2H, t, J=5.6 Hz), 3.60 (2H, t, J=5.8 Hz), 3.69 (2H, t, J=5.8 Hz), 6.37 (1H, s), 6.92 (2H, m), 7.07 (1H, d, J=7.6 Hz), 7.30-7.46 (3H, m), 7.62 (1H, d, J=8.8 Hz), 8.25 (1H, d, J=8.2 Hz), 8.45 (1H, d, J=2.5 Hz), 8.76 (1H, d, J=1.9 Hz).

1. extractionthe mixture was extracted with ethyl acetate (3×)
2. washThe combined organic extracts was washed with water and brine
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified by silica gel chromatography (0-100% ethyl acetate/dichloromethane)