反应详情

温度

80 °C

3-Bromobenzaldehyde (18.5 g, 100 mmol) and (2,6-dimethylphenyl)boronic acid (21.0 g, 140 mmol) were dissolved in a mixed solvent of 1 M aqueous sodium carbonate solution (200 mL), ethanol (100 mL) and toluene (200 mL). After argon substitution, tetrakis(triphenylphosphine)palladium(0) (5.78 g, 5.00 mmol) was added. The reaction mixture was stirred under an argon atmosphere at 80° C. for 20 hr. The reaction mixture was cooled, and water was added to the reaction mixture. The mixture was diluted with ethyl acetate, and the insoluble material was filtered through celite. The organic layer of the filtrate was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane-10% ethyl acetate/hexane) to give the title compound (20.4 g, yield 97%) as a colorless oil.

1. temperatureThe reaction mixture was cooled
2. filtrationthe insoluble material was filtered through celite
3. washThe organic layer of the filtrate was washed with saturated brine
4. dry with materialdried over anhydrous magnesium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by silica gel column chromatography (hexane-10% ethyl acetate/hexane)