反应详情

温度

50 °C

To a suspension of 80% lithium aluminum hydride (250 mg, 5.40 mmol) in tetrahydrofuran (10 mL) was added a solution of ethyl furo[3,2-c]pyrazolo[1,5-a]pyridine-1-carboxylate (310 mg, 1.35 mmol) in tetrahydrofuran (10 mL) at room temperature, and the mixture was stirred at 50° C. for 5 min. Sodium sulfate decahydrate (4.3 g) was added under ice-cooling, and the insoluble material was filtered off. The filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate) and further washed with diisopropyl ether to give the title compound (125 mg, yield 49%).

1. temperaturecooling
2. filtrationthe insoluble material was filtered off
3. concentrationThe filtrate was concentrated under reduced pressure
4. customthe residue was purified by silica gel column chromatography (ethyl acetate)
5. washfurther washed with diisopropyl ether