反应详情

温度

150 °C

A mixture of 3-methoxy-5-phenyl-6-(4-{[4-(5-pyridin-2-yl-1H-pyrazol-3-yl)piperidin-1-yl]methyl}phenyl)pyridazine (2-3) TFA (36.8 mg, 0.059 mmol) and pyridine hydrochloride (591 mg, 5.1 mmol) was heated at 150° C. for 5 min. This solid was dissolved in water, the solution made basic with NaHCO3, and the product extracted into methylene chloride/methanol (5%). This solution was dried, filtered and the solvents evaporated. This residue was digested in acetonitrile to give 5-phenyl-6-(4-{[4-(5-pyridin-2-yl-1H-pyrazol-3-yl)piperidin-1-yl]methyl}phenyl)pyridazin-3-ol (2-4) as a tan solid freebase. NMR (CDCl3/CD3OD): δ8.66 (1H, br d, J=4.5 Hz), 8.40 (1H, br d, J=7 Hz), 8.29 (1H, br m), 7.67 (2H, br m), 7.55 (2H, d, J=7.5 Hz), 7.42 (1H, s), 7.35 (1H, t, J=7.5 Hz), 7.11-7.30 (4H, m), 7.08 (2H, d, J=9 Hz), 6.98 (1H, s), 4.21 (2H, s), 3.47 (2H, d, J=10 Hz), 3.26 (1H, m), 3.00 (2H, m), 2.43 (2H, br d, J=11 Hz), 2.13 (2H, m); m/e (m+1): 489.2.

1. extractionthe product extracted into methylene chloride/methanol (5%)
2. customThis solution was dried
3. filtrationfiltered
4. customthe solvents evaporated