反应详情

温度

70 °C

Sequentially add 3-chloro-5-ethynylpyridine, (prepared as described in PREPARATION 27), (300 mg, 2.2 mmol), (bis(triphenylphosphine)palladium (II) dichloride (69 mg, 0.10 mmol), and copper (I) iodide (38 mg, 0.198 mmol) to a solution of 1-fluoro-4-iodo-2-trifluoromethylbenzene (575 mg, 1.98 mmol) in triethylamine (4 mL) under nitrogen. Heat at 70° C. for 2.5 h and concentrate. Purify the residue by silica gel chromatography, eluting from 0:100 to 20:80 using ethyl acetate:hexanes, to give the title compound as a white solid (520 mg, 88%).

1. concentrationconcentrate
2. customPurify the residue by silica gel chromatography
3. washeluting from 0:100 to 20:80 using ethyl acetate