反应详情

温度

60 °C

To a solution of methyl 3-hydroxy-4-methoxybenzoate (4.87 g, 26.7 mmol) and 2-chloro-5-nitropyridine (4.24 g, 26.7 mmol) in N,N-dimethylformamide (100 mL) was added potassium carbonate (8.13 g, 58.8 mmol), and the mixture was stirred at 60° C. for 14 hr. The reaction solution was cooled to room temperature, diluted with water, and extracted with a mixed solvent (1:1, 100 mL) of ethyl acetate and hexane. The combined organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure to give the title compound (9.73 g) as an orange syrup substance.

1. temperatureThe reaction solution was cooled to room temperature
2. extractionextracted with a mixed solvent (1:1, 100 mL) of ethyl acetate and hexane
3. washThe combined organic layer was washed with saturated brine
4. dry with materialdried over anhydrous magnesium sulfate
5. filtrationThe insoluble material was filtered off
6. concentrationthe filtrate was concentrated under reduced pressure