1.1: ammonia; hydrogen / methanol / 4 h / 20 °C / 5171.62 Torr 2.1: triethylamine; 4-(N,N-dimethlyamino)pyridine / dichloromethane / |Cooling with ice 3.1: ammonium cerium (IV) nitrate / water; acetonitrile / 0.08 h / 0 °C 4.1: sodium hydroxide / dichloromethane / 0.5 h / 20 °C 4.2: 2 h / |Reflux View Scheme

ammonia; hydrogen; nickel in methanol; water T=20°C; P=5171.62 Torr; 24 h;

1.1: ammonia; hydrogen / methanol / 4 h / 20 °C / 5171.62 Torr 2.1: (-)-Dibenzoyl-L-tartaric acid / isopropyl alcohol; water / 24 h / 20 °C 3.1: triethylamine; 4-(N,N-dimethlyamino)pyridine / dichloromethane / |Cooling with ice 4.1: ammonium cerium (IV) nitrate / water; acetonitrile / 0.08 h / 0 °C 5.1: sodium hydroxide / dichloromethane / 0.5 h / 20 °C 5.2: 2 h / |Reflux View Scheme