反应详情

温度

100 °C

Potassium carbonate (0.915 g, 6.62 mmol) and 2-fluoro-5-ethylphenylboronic acid (0.742 g, 4.14 mmol) were added at room temperature to a solution 331a) (0.8 g, 2.2 mmol) in 2-methyl-2-butanol 1/water (44 mL, 10:1). The reaction apparatus was set under an argon atmosphere and (Ataphos)2PdCl2 (0.156 g, 0.22 mmol) was introduced. The reaction mixture was stirred at 100° C. for 4 h, cooled to room temperature and filtered through a pad of celite. The filtrate was concentrated and the remnant purified by flash column chromatography [silica; dichloromethane with 1-2% methanol]. White solid. Yield: 0.5 g (56% of theory)

1. addition(Ataphos)2PdCl2 (0.156 g, 0.22 mmol) was introduced
2. temperaturecooled to room temperature
3. filtrationfiltered through a pad of celite
4. concentrationThe filtrate was concentrated
5. customthe remnant purified by flash column chromatography [silica; dichloromethane with 1-2% methanol]