反应详情

温度

-78 °C

To a 50-mL round-bottom flask containing a solution of 6-bromo-2-chloro-3-phenylquinoline (210 mg, 0.66 mmol, Intermediate 31: step b) in tetrahydrofuran (10 mL) was added 2.5 M n-BuLi in hexanes (0.29 mL, 0.72 mmol) dropwise with stirring at −78° C. After 45 minutes at −78° C., a solution of (4-chlorophenyl)(1-methyl-1H-imidazol-5-yl)methanone (132 mg, 0.60 mmol, Intermediate 8: step b) in tetrahydrofuran (2 mL) was added dropwise. The resulting solution was stirred at −78° C. for an additional 2 hours, then quenched with 30 mL of aqueous NH4Cl and extracted with ethyl acetate (2×30 mL). The combined organic layers were dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was purified by FCC (20:1 DCM/MeOH) to provide the title compound as a white solid. MS (ES): mass calcd. for C26H19Cl2N3O, 459.1; m/z found, 460.0 [M+H]+. 1H NMR (400 MHz, CD3OD) δ 8.96 (d, J=3.9 Hz, 1H), 8.33 (s, 1H), 8.05 (d, J=6.0 Hz, 1H), 7.94 (s, 1H), 7.88 (d, J=6.6 Hz, 1H), 7.42-7.56 (m, 9H), 6.93 (s, 1H), 3.71 (s, 3H).

1. stirringThe resulting solution was stirred at −78° C. for an additional 2 hours
2. customquenched with 30 mL of aqueous NH4Cl
3. extractionextracted with ethyl acetate (2×30 mL)
4. dry with materialThe combined organic layers were dried over anhydrous sodium sulfate
5. concentrationconcentrated under vacuum
6. customThe residue was purified by FCC (20:1 DCM/MeOH)