反应详情

1-(3- (Diethylamino)propyl)-6-nitro-3,4-dihydroquinolin-2(1H)-one (93 mg, 0.305 mmol) in dry methanol (5 mL) was treated with Ra—Ni (slurry in water, ˜0.05 g) followed by hydrazine hydrate (95 uL, 3.05 mmol) at room temperature and the resulting mixture was refluxed for 30 minutes. The reaction was cooled to room temperature, filtered through a celite bed, washed with methanol (2×10 mL). The combined methanol layer was evaporated and crude was purified by column chromatography (2 M NH3 in MeOH:CH2Cl2, 2.5:97.5). Yield: 62 mg of yellow oil (74%). 1H NMR (CDCl3) δ: 6.87 (d, J=8.4 Hz, 1H), 6.56 (dd, J=2.7, 8.4 Hz, 1H), 6.52 (d, J=2.1 Hz, 1H), 3.91 (m, 2H), 2.81-2.76 (m, 2H), 2.61-2.54 (m, 2H), 2.52-2.46 (m, 6H), 1.78-1.61 (m, 2H), 1.01 (t, J=7.2 Hz, 6H). MS (ESI): 276.2 (M+1).

1. temperaturethe resulting mixture was refluxed for 30 minutes
2. filtrationfiltered through a celite bed
3. washwashed with methanol (2×10 mL)
4. customThe combined methanol layer was evaporated
5. customcrude was purified by column chromatography (2 M NH3 in MeOH:CH2Cl2, 2.5:97.5)