反应详情

温度

-43 °C

To a flask containing 1-methyl-1H-1,2,3-triazole (200 mg, 2.41 mmol) was added THF (17 mL) and the solution was cooled to −43° C. using a CH3CN—CO2 bath. n-BuLi, (2.5 M in hexanes, 0.88 mL, 2.19 mmol) was then added dropwise to provide a white suspension. The suspension was stirred at −40° C. for 20 minutes, then a homogeneous solution of (4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)(3,5-dimethylisoxazol-4-yl)methanone (500 mg, 1.05 mmol, Intermediate 63: step b) in 2 mL THF was introduced. A dark brownish solution immediately resulted. The reaction mixture was allowed to warm gradually to 0° C. over 25 minutes, then was quenched with aqueous NH4Cl solution. The aqueous portion was extracted with EtOAc (3×35 mL) and the combined organics were washed with brine, dried over MgSO4, filtered and concentrated to dryness. The residue was purified by FCC (20% EtOAc-hexanes increasing to 50% EtOAc) to provide the title compound as a white solid. 1H NMR (500 MHz, CDCl3) δ 8.08 (d, J=2.1 Hz, 1H), 7.85 (d, J=8.7 Hz, 1H), 7.61-7.46 (m, 3H), 7.39 (d, J=8.1 Hz, 2H), 6.94 (s, 1H), 4.81 (s, 1H), 4.32 (s, 2H), 4.09 (s, 3H), 3.98 (s, 3H), 1.95 (s, 3H), 1.82 (s, 3H); MS (ESI): mass calc. for Chemical Formula: C27H23ClF3N5O3; Exact Mass: 557.1. m/z found, 557.9 (M+H).

1. customto provide a white suspension
2. customA dark brownish solution immediately resulted
3. temperatureto warm gradually to 0° C. over 25 minutes
4. customwas quenched with aqueous NH4Cl solution
5. extractionThe aqueous portion was extracted with EtOAc (3×35 mL)
6. washthe combined organics were washed with brine
7. dry with materialdried over MgSO4
8. filtrationfiltered
9. concentrationconcentrated to dryness
10. customThe residue was purified by FCC (20% EtOAc-hexanes increasing to 50% EtOAc)