1.1: palladium 10 on activated carbon; hydrogen / ethanol / 1 h / 20 °C 1.2: 1 h / 20 °C 2.1: 4-(N,N-dimethlyamino)pyridine; 1,1'-carbonothioylbis-1H-imidazole / 1,2-dichloro-benzene / 6 h / |Reflux 3.1: lithium hydroxide hydrate / ethanol; water / 20 h / 20 °C 4.1: trifluoroacetic acid / 1,2-dichloro-ethane / 2.5 h / 20 °C 5.1: lithium aluminium tetrahydride / tetrahydrofuran / 3 h / |Inert atmosphere; |Reflux View Scheme