1: With pyridine; copper diacetate in tetrahydrofuran T=20°C; 16 h; 2: With hydrogenchloride in water; ethyl acetate T=20°C; 1 h;

8-hydroxy-quinoline; potassium carbonate; copper(l) iodide in dimethyl sulfoxide T=125 - 130°C; Ullmann Coupling;