1,2-dichloro-benzene T=160 - 170°C; 1 h;

1: 56 percent / o-dichlorobenzene / 1 h / 160 - 170 °C 2: 92 percent / 10percent aq. NaOH / ethanol / 1 h / Heating 3: 76 percent / SOCl2 / benzene / 0.5 h / Heating View Scheme

<b>Multi-step reaction with 4 steps<br /> </b>1: 1.) 6 N HCl, NaNO₂; 2.) CuCl₂ / 1.) H₂O, -5 deg C, 1 h; 2.) H₂O, 50-55 deg C<br />2: 98 percent / conc. H₂SO₄ / 7 h / Heating<br />3: 92 percent / Fe, conc. HCl / aq. ethanol / 2 h / Heating<br />4: 1.) 6 N HCl, NaNO₂; 2.) NaN₃ / 1.) -5 deg C, 1 h; 2.) H₂O, r.t.<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: 1.) 6 N HCl, NaNO₂; 2.) CuCl₂ / 1.) H₂O, -5 deg C, 1 h; 2.) H₂O, 50-55 deg C<br />2: 98 percent / conc. H₂SO₄ / 7 h / Heating<br />3: 92 percent / Fe, conc. HCl / aq. ethanol / 2 h / Heating<br />4: 1.) 6 N HCl, NaNO₂; 2.) NaN₃ / 1.) -5 deg C, 1 h; 2.) H₂O, r.t.<br /> <br /> &nbsp;