反应详情

2-(Tetrahydro-2H-pyran-2-yl)-5-((6-(trifluoromethyl)pyridin-3-yl)methoxy)pyridazin-3(2H)-one (5.25 g, 12 mmol estimated) was stirred in MeOH (10 mL), and 2 N HCl in Et2O (50 mL) was added. After 16H, the mixture was diluted with Et2O (100 mL), and the solid was filtered off. The solid was stirred in NaHCO3 solution (15 mL) for 15 minutes and then refiltered to provide the title compound (2.2 g, 67%) as a white solid: 1H NMR (300 MHz, DMSO-d6) δ 12.74 (s, 1H), 8.78 (s, 1H), 8.20-8.16 (dd, J=8.1, 1.5 Hz, 1H), 8.00 (d, J=8.1 Hz, 1H), 7.76 (d, J=2.6 Hz, 1H), 6.31 (s, 1H), 5.25 (s, 2H).

1. filtrationthe solid was filtered off