Trifluoroacetic acid → (S)-methyl 5-(4-chloro-2-cyanophenoxy)-2-methyl-6-(1-(piperidin-4-yl)-1H-pyrazol-4-yl)-3,4-dihydroquinoline-1(2H)-carboxylate

Trifluoroacetic acid (0.5 mL, 6.49 mmol) was added to a solution of (S)-methyl 6-(1-(1-(tert-butoxycarbonyl)piperidin-4-yl)-1H-pyrazol-4-yl)-5-(4-chloro-2-cyanophenoxy)-2-methyl-3,4-dihydroquinoline-1(2H)-carboxylate (0.057 g, 0.094 mmol) in dichloromethane (2.0 mL) and the reaction mixture stirred at rt for 1.5 h. The reaction mixture was concentrated and the residue was partitioned between dichloromethane and saturated aqueous sodium bicarbonate solution. The organic phase was separated, dried over anhydrous sodium sulfate, filtered, and concentrated to afford (S)-methyl 5-(4-chloro-2-cyanophenoxy)-2-methyl-6-(1-(piperidin-4-yl)-1H-pyrazol-4-yl)-3,4-dihydroquinoline-1(2H)-carboxylate (0.041 g, 86%) as an off-white solid. 1H NMR (300 MHz, DMSO-d6) δ ppm 1.01-1.09 (m, 4H), 1.49-1.79 (m, 4H), 1.80-2.07 (m, 4H), 2.52-2.63 (m, 2H), 2.99 (br d, J=12.31 Hz, 2H), 3.72 (s, 3H), 4.03-4.23 (m, 1H), 4.45-4.70 (m, 1H), 6.44 (br d, J=9.09 Hz, 1H), 7.47-7.64 (m, 3H), 7.67 (s, 1H), 7.95 (s, 1H), 8.10 (d, J=2.35 Hz, 1H). MS (ESI, pos. ion) m/z 506 [M+H]+.

1. concentrationThe reaction mixture was concentrated
2. customthe residue was partitioned between dichloromethane and saturated aqueous sodium bicarbonate solution
3. customThe organic phase was separated
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated

ORD 기록

ord-d2e31afe1bfe4bbe829c01049565aee1

출처 데이터셋

uspto-grants-2016_07

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US09388161B2