反应详情

温度

50 °C

A mixture of 5-fluoro-2-phenoxynitrobenzene 2 (15.2 g, 65 mmol) and PtO2 (131 mg) in MeOH (65 mL) was stirred at 50° C. for 5 hours under a hydrogen atmosphere. The mixture was filtered through celite. The filtrate was evaporated to dryness to yield 5-fluoro-2-phenoxyaniline 3 as brown oil (12.7 g, 97%): 1H-NMR (300 MHz, CDCl3) δ 3.88 (br s, 2H), 6.40 (ddd, J=8.6, 8.6, 3.1 Hz, 1H), 6.53(dd, J=9.9, 3.1 Hz, 1H), 6.84 (dd, J=8.6, 5.5 Hz, 1H), 6.86-7.13 (m, 3H), 7.21-7.40 (m, 2H); MS (GC) m/z 203(M., 100%). The product was used in the next step without further purification.

1. filtrationThe mixture was filtered through celite
2. customThe filtrate was evaporated to dryness