反应详情

温度

100 °C

To a stirred solution of ethyl(6-iodo-3-(3-methoxy-4-((6-methoxypyridin-3-yl)methoxy)benzyl)-3H-imidazo[4,5-b]pyridin-2-yl)carbamate (Example 3-36-2) (0.42 g, 0.71 mmol) in ethylene glycol (6 mL) and water (1 mL) was added potassium hydroxide (0.197 g, 3.51 mmol). The resulting mixture was heated to 100° C. After 12 h, the mixture was allowed to cool to room temperature and was diluted with brine (40 mL). The mixture was extracted with ethyl acetate (3×40 mL). The combined organic phases were dried over sodium sulfate, filtered, and concentrated. Chromatographic purification of the residue (silica gel, 3% methanol in dichloromethane elute) afforded 0.206 g (56%) of 6-iodo-3-(3-methoxy-4-((6-methoxypyridin-3-yl)methoxy)benzyl)-3H-imidazo[4,5-b]pyridin-2-amine as a yellow solid.

1. temperatureto cool to room temperature
2. extractionThe mixture was extracted with ethyl acetate (3×40 mL)
3. dry with materialThe combined organic phases were dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customChromatographic purification of the residue (silica gel, 3% methanol in dichloromethane elute)