1: 250 °C 2: 35 percent / LDA / tetrahydrofuran / 0 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>2: DDQ<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '747939', constants.ctx, '0')">2,3-dicyano-5,6-dichloro-p-benzoquinone</a> <br />&nbsp;Yield given;&nbsp;<br /> &nbsp;