potassium phosphate; copper(l) iodide in tetrahydrofuran T=80°C; Ullmann condensation; Inert atmosphere;

palladium diacetate; potassium carbonate; dicyclohexyl(2',6'-diisopropoxy-[1,1'-biphenyl]-2-yl)phosphine in tetrahydrofuran T=110°C; P=7757.43 Torr; 15 h; Autoclave;