(i) NOCl, nBu2O, (ii) /BRN= 3592982/, MeOH; Multistep reaction;

hydrogenchloride in dichloromethane 4 h; Ambient temperature;

bromine in dichloromethane 3 h; Ambient temperature;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1708400', constants.ctx, '0')">2,2'-azo-bisisobutyronitrile</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '969212', constants.ctx, '0')">benzene</a> <br />6&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;