反应详情

温度

0 °C

A dry flask containing 5-bromo-6′-methoxy-2,3′-bipyridin-3-amine (226.0 mg, 0.81 mmol) in dry DMF (5 mL) was cooled to 0° C., then sodium hydride, 60% dispersion in mineral oil (100.7 mg, 2.52 mmol) was added carefully in portions. The mixture was stirred at 0° C. for 15 min, then 4-chloro-5,7-difluoro-3-methyl-2-(pyridin-2-yl)quinoline (353.1 mg, 1.21 mmol) was added in portions. Upon complete addition, the mixture was warmed to 70° C. After 3 h, the reaction was cooled to rt then was carefully treated with 10% sodium carbonate solution. The black mixture was subsequently extracted 5 times with DCM:MeOH (90:10). The organic extraction was then washed one time with brine and dried over anhydrous magnesium sulfate. After filtration and concentration, the residue was purified on basic alumina (0-35% EtOAc in hexanes) to afford a yellow residue as mostly N-(5-bromo-6′-methoxy-2,3′-bipyridin-3-yl)-5,7-difluoro-3-methyl-2-(pyridin-2-yl)-quinolin-4-amine that was used without further purification.

1. additionUpon complete addition
2. temperaturethe mixture was warmed to 70° C
3. waitAfter 3 h
4. temperaturethe reaction was cooled to rt
5. extractionThe black mixture was subsequently extracted 5 times with DCM:MeOH (90:10)
6. extractionThe organic extraction
7. washwas then washed one time with brine
8. dry with materialdried over anhydrous magnesium sulfate
9. filtrationAfter filtration and concentration
10. customthe residue was purified on basic alumina (0-35% EtOAc in hexanes)