反应详情

温度

95 °C

To 2-chloronicotinonitrile (900 mg, 6.50 mmol), 2-fluoro-5-hydroxybenzoic acid (1.0 g, 6.4 mmol) and cesium carbonate (4.2 g, 13 mmol) was added DMSO (7 mL). The mixture was heated to 95° C. for 18 hours in a sealed tube. The mixture was diluted with water and extracted with EtOAc. The aqueous layer was acidified with 6 N HCl (pH˜2) and then extracted with EtOAc. The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated to yield 5-(3-cyanopyridin-2-yloxy)-2-fluorobenzoic acid. MS m/z 257=[M+H]+. Calc'd for C13H7FN2O3: 258.21.

1. extractionextracted with EtOAc
2. extractionextracted with EtOAc
3. dry with materialThe organic layer was dried over anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated