反应详情

N-Methyl-N-(2-(2-nitrophenyl)ethyl)carbamic acid tert-butyl ester (924 mg, 3.3 mmol) was dissolved in ethanol (60 ml). 10% palladium on carbon (200 mg) was added. The mixture was hydrogenated at room temperature at 1 atmosphere for 16 h. The catalyst was filtered off through a plug of celite. The solvent was removed in vacuo. The crude product was purified by flash chromatography on silica (60 g), using ethyl acetate/heptane (1:2) as eluent, to give 723 mg of N-(2-(2-aminophenyl)ethyl)-N-methylcarbamic acid tert-butyl ester.

1. filtrationThe catalyst was filtered off through a plug of celite
2. customThe solvent was removed in vacuo
3. customThe crude product was purified by flash chromatography on silica (60 g)