[Br:1][C:2]1[CH:11]=[CH:10][C:9]([F:12])=[C:8]2[C:3]=1[CH:4]=[CH:5][C:6](Cl)=[N:7]2.[CH3:14][O-:15].[Na+]>CO.O>[Br:1][C:2]1[CH:11]=[CH:10][C:9]([F:12])=[C:8]2[C:3]=1[CH:4]=[CH:5][C:6]([O:15][CH3:14])=[N:7]2To a suspension of 5-bromo-2-chloro-8-fluoroquinoline (1.08 g, 4.2 mmol) in anhydrous methanol (10 mL) at 50° C. was added NaOMe (30% w/w, 0.9 g, 5.0 mmol). The resulting mixture was stirred at 50° C. for one hour, then allowed to cool to room temperature. The mixture was diluted with water, then extracted with EtOAc. The combined organics were washed with water then saturated Nael (aq), dried over MgSO4, filtered, then concentrated. The residue was purified by silica gel chromatography eluting with 0-5% EtOAc/hexanes to afford the title compound as a white solid: 1H NMR (500 MHz, CDCl3): δ 8.33 (dd, J=9.1, 1.6 Hz, 1H); 7.55 (dd, J=8.4, 4.4 Hz, 1H); 7.22 (dd, J=10.2, 8.4 Hz, 1H); 7.04 (d, J=9.2 Hz, 1H); 4.13 (s, 4H). LC4 2.37 min. (M+H) 256.
Wird geladen…
