反应详情

To a solution of N-(2′,4′-difluoro-5-nitrobiphenyl-3-yl)acetamide (4 g, 13.7 mmol) in methanol (30 ml) and ethyl acetate (15 ml) was added 10% Pd/C (400 mg, 0.1 eq.) and the reaction vessel was purged with nitrogen gas for 5 min. The mixture was then hydrogenated with H2 balloon for 12 h. The mixture was filtered through a pad of celite and the filtrate was concentrated under reduced pressure to afford the compound in 89% yield (3.2 g). 1H NMR (300 MHz, DMSO-d6): δ 9.77 (br s, 1H), 7.46-7.42 (m, 1H), 7.35-7.28 (m, 1H), 7.2-7.15 (m, 1H), 6.99 (br s, 1H), 8.86 (d, 1H), 6.39 (d, 1H), 5.45 (br s, 2H), 2.02 (s, 3H).

1. customthe reaction vessel was purged with nitrogen gas for 5 min
2. filtrationThe mixture was filtered through a pad of celite
3. concentrationthe filtrate was concentrated under reduced pressure
4. customto afford the compound in 89% yield (3.2 g)