tetrapropylammonium perruthennate; 4 A molecular sieve; 4-methylmorpholine N-oxide in dichloromethane 14 h; Ambient temperature;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1708400', constants.ctx, '0')">2,2'-azo-bisisobutyronitrile</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3587194', constants.ctx, '0')">iodine</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3587329', constants.ctx, '0')">tri-n-butyl-tin hydride</a> <br />&nbsp;1.) benzene, reflux, 3 h, 2.) CH₂Cl₂;&nbsp;&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 1.) CH₃Li / 1.) ether, from 0 deg C to RT, 1 h, 2.) THF, from 0 deg C to RT, 4 h<br />2: aq. KOH / methanol / 0.5 h / 65 - 70 &deg;C<br />3: 1.) azobis(isobutyronitrile), tri-n-butyltin hydride, 2.) iodine / 1.) benzene, reflux, 3 h, 2.) CH₂Cl₂ <br /> <br /> &nbsp;