1: 80 percent / PDC 2: 90 percent / 2 percent HCl / methanol / 3 h / 25 °C View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209227', constants.ctx, '0')">n-butyllithium</a> <br />&nbsp;1) ether, -50 deg C to 25 deg C, 1.5 h, 2) -78 deg C;&nbsp;&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;