反应详情

Dissolve 1-fluoro-4-iodo-2-methoxybenzene, (prepared as described in PREPARATION 47), (1.0 g, 4.0 mmol) in triethylamine (15 mL, 108 mmol) and add 3-ethynyl-5-methoxypyridine, (prepared as described in PREPARATION 10), (500 mg, 3.8 mmol) followed by bis(triphenylphosphine)palladium (II) dichloride (100 mg, 0.14 mmol) and copper (I) iodide (60 mg, 0.32 mmol). Stir for 18 h at room temperature, concentrate and purify by silica gel chromatography, eluting with 3:1 hexanes:ethyl acetate. Further purify on silica gel, eluting with 9:1 dichloromethane:ethyl acetate, to give the title compound as a white solid (650 mg, 65%).

1. concentrationconcentrate
2. custompurify by silica gel chromatography
3. washeluting with 3:1 hexanes
4. customFurther purify on silica gel
5. washeluting with 9:1 dichloromethane