反应详情

温度

130 °C

To a solution of ethyl 3-fluoro-4-hydroxybenzoate (2.0 mmol, 368 mg) in DMF (5 mL), were added cesium carbonate (Aldrich, 6.0 mmol, 1.95 g) and 4-chloropicolinamide (2.0 mmol, 312 mg). The reaction mixture was heated at 130° C. for 20 h. After cooling to room temperature, 5 mL of cold water was added. The aqueous solution was washed with EtOAc (2×20 mL), and neutralized with 1N HCl to pH 3-4. The precipitate that formed was collected by filtration, washed with water, and dried under vacuum to give the desired product (164 mg, 27% yield). MS(ESI+) m/z 277.32 (M+H)+.

1. temperatureAfter cooling to room temperature
2. washThe aqueous solution was washed with EtOAc (2×20 mL)
3. customThe precipitate that formed
4. filtrationwas collected by filtration
5. washwashed with water
6. customdried under vacuum