反应详情

温度

80 °C

To the solution of Methyl-3-bromo-5-iodobenzoate (2.00 g, 5.87 mmol) in toluene (50 ml) added Pyridine-3-boronic acid-1,3-propanediol ester (1.24 g, 7.63 mmol), potassium carbonate (8.11 g, 58.7 mmol) and tetrakis(triphenylphoshine)palladium (0) (0.34, 0.29 mmol), sequentially. The resulting brownish yellow reaction mixture was heated at 80° C. under argon for 10 h. The reaction mixture was cooled to room temperature, filtered through a pad of celite and concentrated in-vacuo. The residue was purified on silica gel using 3% methanol in dichloromethane to isolate Methyl-3-bromo-5-(3-pyridyl)benzoate (1.16 g, 67%) as a white solid.

1. temperatureThe reaction mixture was cooled to room temperature
2. filtrationfiltered through a pad of celite and
3. concentrationconcentrated in-vacuo
4. customThe residue was purified on silica gel using 3% methanol in dichloromethane