Hydrazine hydrate (1:1) → HCID 59807143, compound

Participants

Reaction Steps

6-nitro-1-(3-(piperidin-1-yl)propyl)-3,4-dihydroquinolin-2(1H)-one (98 mg, 0.309 mmol) in dry methanol (5 mL) was treated with Ra—Ni (˜0.05 g slurry in water) followed by hydrazine hydrate (96 uL, 3.08 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: 71 mg of yellow oil (80%). 1H NMR (CDCl3) δ: 6.90 (d, J=8.4 Hz, 1H), 6.55 (dd, J=2.7, 8.4 Hz, 1H), 6.51 (d, J=2.1 Hz, 1H), 3.91 (m, 2H), 2.80-2.76 (m, 2H), 2.61-2.56 (m, 2H), 2.38-2.33 (m, 6H), 1.84-1.79 (m, 2H), 1.60-1.55 (m, 4H), 1.46-1.42 (m, 2H). MS (ESI): 288.2 (M+1).

Provenance & Evidence