copper(l) iodide; copper; potassium carbonate in 1-methyl-pyrrolidin-2-one T=140°C; 120 h;

1: 4-bromo-phenol With sodium hydride in N,N-dimethyl-formamide; mineral oil T=20°C; 0.333333 h; Inert atmosphere; 2: 2-fluoro-pyridine in N,N-dimethyl-formamide; mineral oil T=105°C; 7 h; 3: With hydrogenchloride in water; N,N-dimethyl-formamide; mineral oil pH=8;

sodium hydride in N,N-dimethyl-formamide; mineral oil T=230°C; 1 h; Microwave irradiation;

copper T=180 - 190°C;