反应详情

A screwcap vial was charged with a solution of 5-bromopyridin-3-amine (273 mg, 1.58 mmol) in dry DMF (8 mL) under nitrogen. To this stirring solution was slowly added sodium hydride (63.0 mg, 1.58 mmol), followed 5 min later by 4-chloro-5,7-difluoro-3-methyl-2-(4-methylpyridin-2-yl)quinoline (400 mg, 1.31 mmol). The reaction mixture was then stirred at rt for 6 h. Additional portions of sodium hydride (1.2 equivalents) were added after 2 and 4 h of stirring. Upon completion, the reaction was quenched with 10% aq. sodium carbonate and the product was extracted with EtOAc. The organic layer was washed with brine, dried over magnesium sulfate, and cond. The resulting crude residue was purified by flash-chromatography (silica gel, 0-60% EtOAc in hexanes) and subsequently by recrystallization in MeOH. This afforded N-(5-bromopyridin-3-yl)-5,7-difluoro-3-methyl-2-(4-methylpyridin-2-yl)quinolin-4-amine. Mass Spectrum (ESI) m/e=441.0 (M+1).

1. stirringof stirring
2. customUpon completion, the reaction was quenched with 10% aq. sodium carbonate
3. extractionthe product was extracted with EtOAc
4. washThe organic layer was washed with brine
5. dry with materialdried over magnesium sulfate, and cond
6. customThe resulting crude residue was purified by flash-chromatography (silica gel, 0-60% EtOAc in hexanes) and subsequently by recrystallization in MeOH