反应详情

温度

70 °C

To a solution of 3-bromo-4-(2-chloro-5-fluoro-4-nitrophenoxy)pyridine (2.00 g, 5.75 mmol) in ethanol/water (9:1, 50 mL) was added iron powder (2.00 g, 35.8 mmol) followed by ammonium chloride (2.00 g, 37.4 mmol). The mixture was heated at 70° C. for 2 h. The reaction mixture was filtered, and the solids were washed with EtOAc. The filtrate was evaporated to dryness. The residue was taken in ethyl acetate and washed with water and dried. The solvent was evaporated to provide 4-(3-bromopyridin-4-yloxy)-5-chloro-2-fluorobenzenamine as light brownish oil (0.98 g, 53.6% yield). MS (ESI) m/z: 317.0/319.0 (M+H+).

1. filtrationThe reaction mixture was filtered
2. washthe solids were washed with EtOAc
3. customThe filtrate was evaporated to dryness
4. washwashed with water
5. customdried
6. customThe solvent was evaporated