反应详情

温度

63 °C

To methyl 1-(4-fluorobenzyl)-4-hydroxy-1H-pyrrolo[2,3-c]pyridine-5-carboxylate (0.6 g, 2 mmol) in methanol (10 ml) and water (1 ml) were added sodium hydroxide (0.56 g, 14 mmol) and O-methylhydroxylamine (0.668 g, 8 mmol). The resulting mixture was stirred for 28 hours at 63° C. Acetic acid (2 mL) was added to precipitate undesired byproduct, 1-(4-fluorobenzyl)-4-hydroxy-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid, which was removed by filtration. The filtrate was concentrated in under reduced pressure; the residue was dissolved in methanol and purified by preparative HPLC to provide the title compound as a white powder (0.035 g, 5.6% yield). 1H NMR (300 MHz, DMSO-d6) d ppm 3.76 (s, 3H) 5.60 (s, 2H) 6.75 (d, J=2.83 Hz, 1H) 7.17-7.24 (m, 2H) 7.32-7.39 (m, J=5.46 Hz, 2H) 7.76 (d, J=3.20 Hz, 1H) 8.47 (s, 1H) 12.08 (s, 1H) 12.89 (s, 1H). LC-MS (APCI, M+H+): 316.1. HPLC: 95% purity.

1. customto precipitate undesired byproduct, 1-(4-fluorobenzyl)-4-hydroxy-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid, which
2. customwas removed by filtration
3. concentrationThe filtrate was concentrated in under reduced pressure
4. dissolutionthe residue was dissolved in methanol
5. custompurified by preparative HPLC