1: 4-methoxy-benzaldehyde; acetophenone With sodium hydroxide T=25°C; 2.5 h; 2: 2-methoxy 5-cyanobenzene With hydroxylamine; acetic acid T=25°C; 2.5 h; 3: T=150°C; 0.05 h; microwave irradiation; Further stages.;

ammonium acetate; oxygen in acetic acid; dimethyl sulfoxide T=80 - 90°C; 12 h;

ammonium acetate; acetic acid microwave irradiation;