反应详情

A solution of 3-(4-(1H-pyrazol-1-yl)benzyl)-6-bromo-4-chloro-2-methoxyquinoline (0.271 g, 0.632 mmol; Intermediate 16) in THF (6 mL) was stirred under argon at ˜−70° C. while n-BuLi (1.63 M in hexanes, 0.368 mL, 0.6 mmol) was added dropwise by syringe over 1 minute. After another 2 minutes, a solution of bis(1-methyl-1H-1,2,3-triazol-5-yl)methanone (0.128 g, 0.664 mmol; Intermediate 43) in THF (6 mL) was added dropwise over 2 minutes, and the reaction was allowed to warm to room temperature overnight as the dry ice/acetone bath slowly warmed (11 hours). The resulting yellow mixture was quenched in one portion at 0° C. with 5 M aqueous NH4Cl (1 mL), and the organic layer was dried (Na2SO4), filtered, and concentrated. The residue was dry load flash chromatographed with a DCM to 100% EtOAc gradient to yield the impure title compound. This was then triturated from ˜0.5 mL DMSO+˜2 mL MeOH at 70° C., and the opaque milky mixture was allowed to cool to room temperature, filtered, and the white filter cake washed with MeOH (2×2 mL). The filter cake was air dried at 110° C. to provide the title compound as a white powder. 1H NMR (400 MHz, DMSO-d6) δ ppm 8.41 (d, J=2.53 Hz, 1H), 8.16 (d, J=2.02 Hz, 1H), 7.96 (s, 1H), 7.90 (d, J=8.59 Hz, 1H), 7.74 (s, 1H), 7.71 (d, J=4.55 Hz, 2H), 7.46 (dd, J=2.27, 8.84 Hz, 1H), 7.36 (d, J=8.59 Hz, 2H), 7.19 (s, 2H), 6.51 (s, 1H), 4.30 (s, 2H), 4.06 (s, 3H), 3.84 (s, 6H); MS m/e 542.3 [M+H]+.

1. additionwas added dropwise by syringe over 1 minute
2. temperatureslowly warmed (11 hours)
3. customThe resulting yellow mixture was quenched in one portion at 0° C. with 5 M aqueous NH4Cl (1 mL)
4. dry with materialthe organic layer was dried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated
7. customThe residue was dry load flash
8. customchromatographed with a DCM to 100% EtOAc gradient