反应详情

温度

70 °C

A mixture of 5-hydroxy-2-methoxyisonicotinaldehyde (147 mg, 0.96 mmol, 1 eq.), 3-(chloromethyl)-2-(1-methyl-1H-pyrazol-5-yl)pyridine hydrochloride (236 mg, 0.96 mmol, 1 eq.), and K2CO3 (532 mg, 3.85 mmol, 3 eq.) in DMF (3.0 mL) was heated at 70° C. for 2 h. The mixture was cooled, filtered, concentrated, and purified on silica gel using a mixture of EtOAc and hexanes as eluent to give 2-methoxy-5-((2-(1-methyl-1H-pyrazol-5-yl)pyridin-3-yl)methoxy)isonicotinaldehyde (232.5 mg, 75%) as an off-white solid. 1H NMR (400 MHz, CDCl3) δ 10.40 (s, 1H), 8.77 (dd, J=4.7, 1.7 Hz, 1H), 8.03 (dd, J=7.9, 1.7 Hz, 1H), 7.93 (s, 1H), 7.55 (d, J=1.9 Hz, 1H), 7.44 (dd, J=7.9, 4.8 Hz, 1H), 7.11 (d, J=0.4 Hz, 1H), 6.43 (d, J=1.9 Hz, 1H), 5.20 (s, 2H), 3.97 (s, 3H), 3.92 (s, 3H). LRMS (M+H+) m/z 325.1.

1. temperatureThe mixture was cooled
2. filtrationfiltered
3. concentrationconcentrated
4. custompurified on silica gel using
5. additiona mixture of EtOAc and hexanes as eluent