2,3-dicyano-5,6-dichloro-p-benzoquinone in benzene 3 h; Heating;

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '969212', constants.ctx, '0')">benzene</a> <br />48&nbsp;h;&nbsp;&nbsp;Irradiation;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 1) n-BuLi / 2) CoCl₂ / 1) ether, hexane, 0 deg C, 2 h, 2) reflux, 12 h<br />2: 62 percent / N-bromosuccinimide / dimethylformamide / 12 h / 70 - 80 &deg;C<br />3: 1) n-BuLi / 2) CoCl₂ / 1) ether, hexane, -10 to 0 deg C, 2 h, 2) reflux, 12 h<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: Pb(OAc)4<br />2: 38 percent Chromat_. / air, copper(II) sulfate on alumina / chlorobenzene / 8 h / 140 &deg;C<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209227', constants.ctx, '0')">n-butyllithium</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '11333866', constants.ctx, '0')">bis(acetylacetonate)nickel(II)</a> <br />&nbsp;1) ether, -10 to -30 deg C, 30 min, 2) a) -78 deg C, 1 h, b) room temp., 1 h, c) reflux, 1 h;&nbsp;&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 47 percent / Pb(OAc)4, BF₃*Et₂O / acetonitrile / 3 h / Ambient temperature<br />2: 1) Li 2) O₂ / 1) THF, 4 h, reflux 2) 10 min<br /> <br /> &nbsp;