反应详情

温度

75 °C

3-bromo-4-(5-chloro-6-cyclopropylpyridin-3-yloxy)benzonitrile (Preparation 38, 485 mg, 1.37 mmol), 2-methoxypyridin-3-ylboronic acid (233 mg, 1.53 mmol) and cesium carbonate were suspended in dioxane (6 mL) and water (3 mL). The suspension was degassed 20 minutes with nitrogen then tetrakis-triphenylphosphinepalladium (80 mg, 0.07 mmol) were added and the reaction mixture was heated overnight at 75° C. The solution was concentrated in vacuo to a quarter of the volume then diluted with water (20 mL) and extracted with ethyl acetate (3×20 mL). The organic layers were combined, dried over magnesium sulfate, filtered and concentrated in vacuo. The crude material was purified by silica gel column chromatography to afford the title compound as a foam (478 mg, 91%).

1. customThe suspension was degassed 20 minutes with nitrogen
2. concentrationThe solution was concentrated in vacuo to a quarter of the volume
3. additionthen diluted with water (20 mL)
4. extractionextracted with ethyl acetate (3×20 mL)
5. dry with materialdried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe crude material was purified by silica gel column chromatography