反应详情

温度

65 °C

85% Hydrazine hydrate (5.1 mL, 74 mmol) was added to a solution of [3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3-phenyl-propyl]-carbamic acid tert-butyl ester (2.8 g, 7.4 mmol) in THF (25 mL) and MeOH (25 mL). The resulting mixture was heated at 65° C. for 6 hours. Then the precipitate was filtered, and the filtrate was concentrated under reduced pressure to give crude product which was purified by column chromatography on silica gel (dichloromethane:MeOH, 100:1, 1% NH3H2O) to give (3-amino-3-phenyl-propyl)-carbamic acid tert-butyl ester as an off-white solid. (Yield 1.7 g, 92%).

1. filtrationThen the precipitate was filtered
2. concentrationthe filtrate was concentrated under reduced pressure
3. customto give crude product which
4. customwas purified by column chromatography on silica gel (dichloromethane:MeOH, 100:1, 1% NH3H2O)