反应详情

温度

80 °C

To a solution of 2,6-dichloro-3-trifluoromethylpyridine (1 g, 4.54 mmol) in a mixture of toluene (11 mL), 1,4-dioxane (5.88 mL), and water (5.88 mL) were added sodium carbonate (0.96 g, 9.07 mmol), 4-ethylphenyl boronic acid (0.61 g, 4.08 mmol), and PdCl2(dppf)CH2Cl2 (0.75 g, 0.92 mmol). The mixture was stirred at 80° C. for 4 h, and then concentrated under reduced pressure. The product (0.69 g, 53%) was isolated after silica gel flash chromatography (2:1 hexanes/EtOAc). 1H NMR (400 MHz, CD3OD) δ 8.15 (d, 1H), 8.01 (d, 2H), 7.95 (d, 1H), 7.33 (d, 2H), 2.71 (q, 2H), 1.27 (t, 3H).

1. concentrationconcentrated under reduced pressure