反应详情

温度

80 °C

To a solution of 2-chloro-5-nitropyridine (2.00 g, 5.74 mmol) and 3-(1-cyano-1-methylethyl)-N-[3-hydroxy-4-(trifluoromethyl)phenyl]benzamide (955 mg, 6.02 mmol) in N,N-dimethylformamide (15 mL) was added potassium carbonate (1.18 g, 8.61 mmol), and the mixture was stirred at 80° C. for 20 hr. After the reaction mixture was cooled to room temperature, water (150 mL) was added, and the mixture was twice extracted with ethyl acetate/hexane (75 mL/75 mL). The combined organic layer was washed with saturated brine (150 mL), and dried over anhydrous sodium sulfate. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate=80/20→30/70). The obtained solution was concentrated under reduced pressure to give the title compound (1.79 g, 66%) as a yellow amorphous substance.

1. temperatureAfter the reaction mixture was cooled to room temperature
2. extractionthe mixture was twice extracted with ethyl acetate/hexane (75 mL/75 mL)
3. washThe combined organic layer was washed with saturated brine (150 mL)
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationThe insoluble material was filtered off
6. concentrationthe filtrate was concentrated under reduced pressure
7. customThe obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate=80/20→30/70)
8. concentrationThe obtained solution was concentrated under reduced pressure