1: 1H-imidazole With sodium hydride in dimethyl sulfoxide T=20°C; 1 h; 2: 3-fluoro-1-bromobenzene in dimethyl sulfoxide T=140°C; 21 h;

copper(I) oxide; sodium t-butanolate in 1-methyl-pyrrolidin-2-one T=100°C; 15 h; Microwave irradiation;