反应详情

温度

85 °C

To a solution of 6-chloro-4-ethoxy-3-iodo-7-methoxy-2-methylquinoline (1.56 g, 4.13 mmol), (4-(4-(trifluoromethoxy)phenoxy) phenyl) boronic acid (1.85 g, 6.20 mmol) and palladium (0) tetrakis triphenylphosphine (239 mg, 0.207 mmol) in degassed dimethylformamide was added 8.25 ml of a 2 N aqueous potassium carbonate solution. The reaction mixture was stirred 18 hours at 85° C., filtered through celite and concentrated in vacuo. The resulting residue was resuspended in dichloromethane and water. The organic layer was extracted with brine, dried over magnesium sulfate and concentrated in vacuo. Purification by silica gel chromatography (0-20% ethyl acetate in dichloromethane) provided 1.18 g 6-chloro-4-ethoxy-7-methoxy-2-methyl-3-(4-(4-(trifluoromethoxy)phenoxy)phenyl)quinoline (57% yield) as a light brown solid. 1H NMR (400 MHz, CDCl3) δ 8.11 (s, 1H), 7.43 (s, 1H), 7.31-7.36 (m, 2H), 7.22-7.26 (m, 2H), 7.07-7.14 (m, 4H), 4.04 (s, 3H), 3.71 (q, J=7.1 Hz, 2H), 2.49 (s, 3H), 1.18 (t, J=7.1 Hz, 3H).

1. filtrationfiltered through celite and
2. concentrationconcentrated in vacuo
3. extractionThe organic layer was extracted with brine
4. dry with materialdried over magnesium sulfate
5. concentrationconcentrated in vacuo
6. customPurification by silica gel chromatography (0-20% ethyl acetate in dichloromethane)