反应详情

温度

70 °C

To ethyl 2-((phenoxycarbonyl)amino)-4-(propylamino)pyrimidine-5-carboxylate (E7, 2.89 g) and 4-aminopyridine (3.16 g), N,N-dimethylformamide (30 mL) was added at room temperature, and the mixture was stirred at 70° C. for 30 minutes. The reaction mixture was cooled to room temperature, and then the reaction mixture was poured into water (300 mL). The solid matter was taken by filtration, and purified by silica gel column chromatography (eluent, ethyl acetate) to obtain ethyl 4-(propylamino)-2-(3-(pyridin-4-yl)ureido)pyrimidine-5-carboxylate (E8, 830 mg) as white solid.

1. temperatureThe reaction mixture was cooled to room temperature
2. filtrationThe solid matter was taken by filtration
3. custompurified by silica gel column chromatography (eluent, ethyl acetate)