1: 35 percent / 1,2-dichloro-benzene / 1 h / Heating 2: 75 percent / phosphorus oxychloride / 1 h / 70 °C 3: 96 percent / hydrazine hydrate, KOH / ethane-1,2-diol / 0.5 h View Scheme

1: 35 percent / 1,2-dichloro-benzene / 1 h / Heating 2: 75 percent / phosphorus oxychloride / 1 h / 70 °C View Scheme

in 1,2-dichloro-benzene 1 h; Heating;

in 1,2-dichloro-benzene 1 h; Heating;