反应详情

温度

60 °C

N-{7-(Benzyloxy)-4-[(tetrahydro-2H-pyran-4-ylmethyl)amino]quinolin-3-yl}propanamide dihydrochloride (14.2 g, 31.1 mmol) was slurried in ethanol (150 mL) and diluted with water (50 mL). Potassium carbonate (12.3 g, 89 mmol) in water (15 mL) was added and the reaction was stirred until dissolution (˜30 minutes). The reaction was then heated to 60° C. for 16 hours. The ethanol was evaporated under reduced pressure and the remaining water was extracted with dichloromethane. The organic fraction was sequentially washed with water, followed by saturated aqueous sodium chloride, dried over anhydrous sodium sulfate, filtered and concentrated. Recrystallization from acetonitrile afforded 8.4 g of 7-(benzyloxy)-2-ethyl-1-(tetrahydro-2H-pyran-4-ylmethyl)-1H-imidazo[4,5-c]quinoline as a tan powder.

1. customThe ethanol was evaporated under reduced pressure
2. extractionthe remaining water was extracted with dichloromethane
3. washThe organic fraction was sequentially washed with water
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. customRecrystallization from acetonitrile