反应详情

N-(4-{4-amino-7-[1-(2-hydroxyethyl)-1H-pyrazol-4-yl]thieno[3,2-c]pyridin-3-yl}phenyl)-N′-(3-fluorophenyl)urea free base solid (102.65 mg) was dissolved in 5 mL of THF/water mixture (80/20 v/v) at 70° C. Citric acid (21.94 mg) was added to the solution followed by the slow addition of heptane (7.5 mL). The appearance of a small amount of precipitant formed in the heptane layer was noted. The precipitant dissolved as it fell into the THF/water layer. The solution was cooled to ambient temperatures. Crystalline solids formed after several days at ambient temperatures. Solid was collected by vacuum filtration.

1. dissolutionThe precipitant dissolved as it
2. temperatureThe solution was cooled to ambient temperatures
3. customCrystalline solids formed after several days at ambient temperatures
4. filtrationSolid was collected by vacuum filtration