反应详情

To a mixture of (5-fluoro-2-nitrophenyl)pyridin-3-yl-amine (25 mmol) in EtOH (300 mL) was added 10% Pd/C (1.0 g) and the reaction mixture stirred at RT under a hydrogen atmosphere for 18 h. Additional Pd/C (1.0 g) was added and stirring at RT under a hydrogen atmosphere continued for 2 h. The suspension was filtered through a pad of Celite® and the filtrate was concentrated in vacuo to afford the title compound as a brown solid (quantitative). 1H NMR (CDCl3, 300 MHz): δ 8.27 (1H, dd, J=2.64, 0.91 Hz), 8.15 (1H, dd, J=4.41, 1.71 Hz), 7.20-7.09 (2H, m), 6.87 (1H, dd, J=9.61, 2.59 Hz), 6.80-6.68 (2H, m), 5.50 (1H, br s), 2.96 (2H, br s)

1. stirringstirring at RT under a hydrogen atmosphere
2. waitcontinued for 2 h
3. filtrationThe suspension was filtered through a pad of Celite®
4. concentrationthe filtrate was concentrated in vacuo