[Br:1][C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][N:3]=1.FC(F)(F)C(O)=[O:12].OO>O>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][N+:3]=1[O-:12]2-Bromo-5-fluoropyridine (15 g, 85.6 mmol), trifluoroacetic acid (70 mL, 908 mmol) and hydrogen peroxide (35% in water) (9 mL, 105 mmol) were stirred overnight at 70° C. The mixture was poured into water and extracted with dichloromethane. The organic layers were washed with NaHCO3 (aq), dried over MgSO4 and the solvent was removed i.vac.
불러오는 중…