反应详情

温度

0 °C

Sodium hydride (60% in oil, 0.36 g) was suspended in DMF(10 ml), and was cooled to 0° C. in an ice water bath. 5H-Furo[3,2-c]pyridin-4-one(1.0 g) was added thereto at the same temperature, and the mixture was stirred at 0° C. for an hour. Bromoacetaldehyde diethylacetal(2.6 ml) was added thereto, and the mixture was stirred at 80° C. for 5 hours. Water was added to the reaction liquid, followed by extraction by ethyl acetate. The organic layer was dried over sodium sulfate, and condensed under reduced pressure. A 3N-hydrochloric acid(5.8 ml) was added to an acetone solution (20 ml) of the residue, and the liquid was stirred at 60° C. for 5 hours. Water was added to the reaction liquid and stirred at room temperature. The precipitated insoluble matter was separated, washed with water, and dried to give the title compound(0.90 g) as a white solid.

1. stirringthe mixture was stirred at 80° C. for 5 hours
2. extractionfollowed by extraction by ethyl acetate
3. dry with materialThe organic layer was dried over sodium sulfate, and condensed under reduced pressure
4. additionA 3N-hydrochloric acid(5.8 ml) was added to an acetone solution (20 ml) of the residue
5. stirringthe liquid was stirred at 60° C. for 5 hours
6. additionWater was added to the reaction liquid
7. stirringstirred at room temperature
8. customThe precipitated insoluble matter was separated
9. washwashed with water
10. customdried