UV-irradiation;

sodium acetate; nickel Hydrogenation;

sodium acetate; acetic acid

1: triethylamine / dichloromethane / 3 h / 20 °C 2: palladium 10 on activated carbon; hydrogen / ethyl acetate / 1 h View Scheme

hydrogenchloride in water; toluene pH=2 - 3; 48 h;

1: 2-nitrobenzylamine hydrochloride With triethylamine in 1,2-dichloro-ethane T=20°C; 0.0833333 h; 2: tert-butyl 4-oxo-piperidine-1-carboxylate With sodium tris(acetoxy)borohydride; acetic acid in 1,2-dichloro-ethane T=20°C; 1 h; 3: With water; sodium carbonate in 1,2-dichloro-ethane