反应详情

温度

23 °C

A mixture of ethyl 2,3-bis(4-((dimethylamino)methyl)phenyl)-7-fluoro-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate (520 mg) in 85% hydrazine monohydrate (10 mL) and methanol (50 mL) was stirred at 23° C. for overnight. Methanol was removed under reduced pressure. The mixture was filtered and washed with water to give the title compound (11 mg, yield 20%). LC-MS (ESI) m/z: 472 (M+1)+. 1H-NMR (400 MHz, CD3OD) δ (ppm): 2.09 (s, 12H), 3.31 (s, 4H), 4.22 (d, J=8.0 Hz, 1H), 4.67 (d, J=8.0 Hz, 1H), 6.80 (dd, 1H), 6.97-6.99 (m, 2H), 7.06-7.11 (m, 5H), 7.14-7.16 (m, 2H); 19F-NMR (400 MHz, CD3OD) 6 (ppm): −105.58 (s).

1. customMethanol was removed under reduced pressure
2. filtrationThe mixture was filtered
3. washwashed with water