反应详情

Methyl 3-nitro-5-(trifluoromethyl)benzoate (9.0 g, 36.1 mmol) in methanol (30 mL) was flushed with nitrogen, and treated with palladium (10% on charcoal, 0.90 g). The flask was flushed with hydrogen and allowed to stir under an atmosphere of hydrogen overnight. The reaction was flushed with nitrogen, filtered through celite, and concentrated. Flash chromatography on silica gel (30% ethyl acetate/hexanes) afforded 6.8 g (86%). 1H-NMR (CDCl3, 500 MHz) δ 7.64 (s, H), 7.49 (s, 1H), 7.05 (s, 1H), 3.91 (s, 3H). Mass spec.: 220.05 (MH)+.

1. customThe flask was flushed with hydrogen
2. customThe reaction was flushed with nitrogen
3. filtrationfiltered through celite
4. concentrationconcentrated
5. customFlash chromatography on silica gel (30% ethyl acetate/hexanes) afforded 6.8 g (86%)