Potassium Carbonate → HCID 178513408、化合物

関与物質

反応手順

Hydroxylamine hydrochloride (1.5 g) and potassium carbonate (3.83 g) were stirred together in absolute ethanol (100 ml) for 15 minutes. Indazole-3-carbonitrile (2 g) was added and the solution heated at reflux for 4 hours, cooled to room temperature and diluted with methanol (5 ml). The solution was filtered and the solvent evaporated. The residue was extracted with anhydrous ether, the extracts were dried over MgSO4, filtered and the solvent removed to afford a white solid, which was recrystallised from acetone/dichloromethane to afford the title compound (900 mg), m.p. 155°-158° C. δH (360 MHz, CDCl3) 6.46 (1H, brm, N-OH), 7.17 (1H, t, J=1 Hz, H-6), 7.41 (1H, t, J=2 Hz, H-5), 7.55 (1H, d, J=2 Hz, H-4), 8.03 (1H, t, J=2 Hz, H-7); m/z (M+ , 100%), 176 (100), 144 (80), 119 (25), 92 (15).

情報源と証拠