反应详情

To a suspension of 4,5-Dichloro-2-{4-[2-(3-chloro-phenylamino)-pyrimidin-4-yl]-pyridin-2-yl}-2H-pyridazin-3-one (0.3 g) in acetonitrile (10 mL) was added of 0.15 mL of ethylmercaptan and 0.280 mg of potassium carbonate. The mixture was heated to reflux for 2 h. The suspension was filtered and the solid was washed with ethyl acetate to gave the title compound (0.220 g, 46%). Mp 80–100° C., 1H NMR (DMSO-d6) 8.8 (1H, d, 3 Hz), 859 (1H, d, 6 Hz), 8.37 (1H, s, NH), 7.98 (1H, d, 6 Hz, 3 Hz), 7.92 (1H, t, 3 Hz), 7.86 (1H, s), 7.46 (1H, d, 9 Hz, 3 Hz), 7.40 (1H,s), 7.27(2H, m), 7.04(1H, d, 9 Hz), 3.12 (2H, q, 6 Hz), 1.47 (3H, t, 6 Hz).

1. temperatureThe mixture was heated
2. temperatureto reflux for 2 h
3. filtrationThe suspension was filtered
4. washthe solid was washed with ethyl acetate