反应详情

温度

60 °C

To 8 ml of DMF was added 4-iodo-1H-indazol-3-amine (690 mg, 2.65 mmol) and 3-ethynylaniline (480 mg, 1.5 eq., 4.1 mmol). Following that, Bis(triphenylphosphine) palladium(II) dichloride (180 mg, 0.25 mmol, 10 mol %), Copper Iodide (100 mg, 0.52 mmol, 20 mol %), Triphenylphosphine (18 mg, 0.07 mmol, 3 mol %) and 8 ml of triethylamine was added. Nitrogen was bubbled through the reaction mixture for 15 minutes. The reaction was then set with a reflux condenser, set under nitrogen atmosphere, and heated at 60° C. for 2 hours. After that, the reaction was cooled to room temperature and 40 ml of ethyl acetate was added. The organic layer was extracted with aqueous sodium bicarbonate (3×40 ml), brine (3×40 ml), dried using anhydrous sodium sulfate, loaded onto silica and columned to give 4-((3-aminophenyl)ethynyl)-1H-indazol-3-amine.

1. additionwas added
2. customNitrogen was bubbled through the reaction mixture for 15 minutes
3. customThe reaction was then set with a reflux condenser
4. temperatureAfter that, the reaction was cooled to room temperature
5. addition40 ml of ethyl acetate was added
6. extractionThe organic layer was extracted with aqueous sodium bicarbonate (3×40 ml), brine (3×40 ml)
7. customdried