反应详情

温度

65 °C

To a solution of 4-oxo-5-(trifluoromethyl)-1H-quinoline-3-carboxylic acid (7) (9.1 g, 35.39 mmol) and 4-(7-azabicyclo[2.2.1]heptan-7-yl)-2-(trifluoromethyl)aniline (11A) (9.2 g, 35.74 mmol) in 2-methyltetrahydrofuran (91.00 mL) was added propyl phosphonic acid cyclic anhydride (T3P (50% solution in ethyl acetate), 52.68 mL, 88.48 mmol) and pyridine (5.6 g, 5.73 mL, 70.78 mmol) at room temperature. The reaction flask was heated at 65° C. for 10 h under a nitrogen atmosphere. After cooling to room temperature, the reaction mixture was then diluted with ethyl acetate and quenched with saturated Na2CO3 solution (50 mL). The layers were separated, and the aqueous layer was extracted twice more with ethyl acetate. The combined organic layers were washed with water, dried over Na2SO4, filtered and concentrated to a tan solid. The crude solid was slurried in a 2:1 mixture of ethyl acetate and diethyl ether, collected by vacuum filtration, and washed twice more with ethyl acetate/diethyl ether mixture to provide the crude product as a light yellow crystalline powder. The powder was dissolved in warm ethyl acetate and absorbed onto Celite. Purification by silica gel chromatography (0-50% ethyl acetate in dichloromethane) provided N-(4-(7-azabicyclo[2.2.1]heptan-7-yl)-2-(trifluoromethyl)phenyl)-4-oxo-5-(trifluoromethyl)-1,4-dihydroquinoline-3-carboxamide (Compound I) as a white crystalline solid in the solid form A. LC/MS m/z 496.0 [M+H]+, retention time 1.48 min (RP-C18, 10-99% CH3CN/0.05% TFA over 3 min). 1H NMR (400.0 MHz, DMSO-d6) δ 13.08 (s, 1H), 12.16 (s, 1H), 8.88 (s, 1H), 8.04 (dd, J=2.1, 7.4 Hz, 1H), 7.95-7.88 (m, 3H), 7.22 (dd, 2.5, 8.9 Hz, 1H), 7.16 (d, J=2.5 Hz, 1H), 4.33 (s, 2H), 1.67 (d, J=6.9 Hz, 4H), 1.44 (d, J=6.9 Hz, 4H).

1. temperatureAfter cooling to room temperature
2. customquenched with saturated Na2CO3 solution (50 mL)
3. customThe layers were separated
4. extractionthe aqueous layer was extracted twice more with ethyl acetate
5. washThe combined organic layers were washed with water
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated to a tan solid
9. additionThe crude solid was slurried in a 2:1 mixture of ethyl acetate and diethyl ether
10. filtrationcollected by vacuum filtration
11. washwashed twice more with ethyl acetate/diethyl ether mixture
12. customto provide the crude product as a light yellow crystalline powder
13. customabsorbed onto Celite
14. customPurification by silica gel chromatography (0-50% ethyl acetate in dichloromethane)