反应详情

温度

30 °C

Raney Nickel (3 g) was added to 5-tert-butyl-6-nitro-1H-indole (15 g, 67 mmol) in methanol (100 mL). The mixture was stirred under hydrogen (1 atm) at 30° C. for 3 h. The catalyst was filtered off. The filtrate was dried over Na2SO4 and concentrated. The crude dark brown viscous oil was purified by column chromatography (10-20% ethyl acetate/petroleum ether) to give 5-tert-butyl-1H-indol-6-ylamine as a gray solid (11 g, 87%). NMR (300 MHz, DMSO-d6) δ 10.3 (br s, 1H), 7.2 (s, 1H), 6.9 (m, 1H), 6.6 (s, 1H), 6.1 (m, 1H), 4.4 (br s, 2H), 1.3 (s, 9H).

1. filtrationThe catalyst was filtered off
2. dry with materialThe filtrate was dried over Na2SO4
3. concentrationconcentrated
4. customThe crude dark brown viscous oil was purified by column chromatography (10-20% ethyl acetate/petroleum ether)