反应详情

温度

20 °C

To a solution of 2-(5-bromo-2-(4-methoxyphenyl)pyrazolo[1,5-a]pyridin-3-yl)acetaldehyde (40 mg, 0.12 mmol) and piperidine (23 μl, 0.23 mmol) in 1,2-dichloroethane (3.5 ml) was added sodium triacetoxyborohydride (49 m, 0.23 mmol). The reaction mixture was stirred at 20° C. for 17 h. The reaction mixture was diluted with dichloromethane (10 mL) and washed with a 5% sodium bicarbonate solution (6 mL). The organic layer was dried over anhydrous MgSO4, filtered and concentrated under reduced pressure to give a residue that was purified by automated ISCO chromatography (methanol/dichloromethane; 5/95). The title compound was obtained as a white solid (28 mg, 58%). LCMS m/z 414.1, 416.1 (M+H)+, ret. time=1.76 min.

1. washwashed with a 5% sodium bicarbonate solution (6 mL)
2. dry with materialThe organic layer was dried over anhydrous MgSO4
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customto give a residue that
6. customwas purified by automated ISCO chromatography (methanol/dichloromethane; 5/95)