反应详情

温度

80 °C

A suspension of 3-(1-cyanocyclopropyl)-N-[2-methyl-5-(4-nitrophenoxy)phenyl]benzamide (3.19 g, 22.5 mmol), calcium chloride (5.55 g, 50 mmol) and reduced iron (14.5 g, 260 mmol) in ethanol (540 mL)/water (60 mL) was stirred with heating at 80° C. for 12 hr. The reaction mixture was cooled to room temperature, passed through a pad filled with celite to separate insoluble material, and the insoluble material was washed with ethanol. The filtrate and the washing were combined and concentrated under reduced pressure. The obtained residue was diluted with ethyl acetate (400 mL), washed with 5% aqueous ammonium chloride solution (200 mL), water (200 mL×2), 5% aqueous sodium hydrogencarbonate solution (200 mL) and saturated brine (200 mL), successively, and dried over anhydrous sodium sulfate. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure to give the title compound (7.0 g, 84%) as a pale-yellow amorphous substance. The obtained compound was used in the next reaction without a further purification.

1. temperatureThe reaction mixture was cooled to room temperature
2. additionfilled with celite
3. customto separate insoluble material
4. washthe insoluble material was washed with ethanol
5. concentrationconcentrated under reduced pressure
6. additionThe obtained residue was diluted with ethyl acetate (400 mL)
7. washwashed with 5% aqueous ammonium chloride solution (200 mL), water (200 mL×2), 5% aqueous sodium hydrogencarbonate solution (200 mL) and saturated brine (200 mL)
8. dry with materialsuccessively, and dried over anhydrous sodium sulfate
9. filtrationThe insoluble material was filtered off
10. concentrationthe filtrate was concentrated under reduced pressure