1-(4-Aminophenyl)cyclopentanecarbonitrile

Synthesis

1-(4-Aminophenyl)cyclopentanecarbonitrile is synthesised using 1-(4-nitrophenyl)cyclopentanecarbonitrile as a raw material by chemical reaction. The specific synthesis steps are as follows:
General procedure: The kilogram-scale reaction was performed in a 50 L single-deckglass reactor with the following conditions: 3 m (3 kg, 6.3 mol), FeO(OH)/C (460 g, 0.63 mol, 0.1 equiv), ethanol (20 L) and 80% N2H4H2O(800 g, 12.6 mol, 2 equiv) were added to a 50 L single-deck glass reactorat N2 atmosphere, then rising up the temperature to 75 C. The reactantwas stirred at 75 C for about 5 h. After the reaction was finished, the FeO(OH)/C catalyst was filtered off and washed with dichloromethane(5 L). The solvents were removed in vacuo and dried overnight byvacuum drying oven to get off-white powder 4m (2.67 kg, 6 mol), withHPLC purity >99.5%, yield 92.5%.