反应详情

To a solution of sodium (23 mg) in dry ethanol (3 ml) was added 5-amino-3-(4-fluorophenyl)-4-(pyridin-4-yl)pyrazole (254 mg) and ethyl cyanoacetate (113 mg). The mixture was refluxed for 5 hours and cooled. To the reaction mixture were added 1N-hydrochloric acid (2 ml) and water (5 ml). The separated solid was collected, washed with water and dried to give 7-amino-2-(4-fluorophenyl)-5-hydroxy-3-(pyridin-4-yl)pyrazolo[1,5-a]pyrimidine (270 mg).

1. temperatureThe mixture was refluxed for 5 hours
2. temperaturecooled
3. customThe separated solid was collected
4. washwashed with water
5. customdried