反应详情

温度

90 °C

6-Chloro-3-tributylstannyl-1H-indazole (584 mg, 1.32 mmol), copper(I) iodide (14 mg, 0.074 mmol) and 2-bromo-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (1-pyridin-3-yl-ethyl)-amide (350 mg, 0.74 mmol) were combined with DMF (6 mL) to give a yellow solution. The mixture was degassed with nitrogen for 10 min then tetrakis(triphenylphosphine)palladium (0) (42 mg, 0.037 mmol) was added and the reaction was stirred under nitrogen at 90° C. for 15 h. The reaction mixture was cooled, diluted with ether (60 mL) and washed with water and brine. The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography (0-3% methanol in dichloromethane with 0.5% ammonium hydroxide) to afford 203 mg (48%) of 2-(6-chloro-1H-indazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (1-pyridin-3-yl-ethyl)-amide as a foaming solid. MS: (M+H)+=549.

1. customto give a yellow solution
2. customThe mixture was degassed with nitrogen for 10 min
3. temperatureThe reaction mixture was cooled
4. washwashed with water and brine
5. dry with materialThe organic layer was dried over sodium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe residue was purified by silica gel chromatography (0-3% methanol in dichloromethane with 0.5% ammonium hydroxide)