N,N,N',N'-tetramethyl-7,8-dihydro-6H-dipyrido[1,2-a;2',1'-c][1,4] diazepine-2,12-diamine in N,N-dimethyl-formamide T=20°C; 72 h; GloveboxUV-irradiation;

1: N-phenyl-carbamic acid-ethyl ester With sodium hydride in tetrahydrofuran T=20°C; 0.5 h; Inert atmosphere; 2: allyl bromide With tetra-(n-butyl)ammonium iodide in tetrahydrofuran T=20°C; 1 h; Inert atmosphere;

1.1: potassium carbonate / tetrahydrofuran / 2 h / 20 °C / |Inert atmosphere 2.1: sodium hydride / tetrahydrofuran / 0.5 h / 20 °C / |Inert atmosphere 2.2: 1 h / 20 °C / |Inert atmosphere View Scheme

sodium hydride; N,N-dimethyl-formamide