1: 60 percent / 1.) N-methylpyrrolidine, diisobutylaluminum hydride / heptane / 1.) 25 deg C, 10 min, 2.) 60 deg C, 14 h 2: 52 percent Chromat. / 760 °C / 0.01 Torr View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209227', constants.ctx, '0')">n-butyllithium</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102391', constants.ctx, '0')">tetrahydrofuran</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '1730733', constants.ctx, '0')">hexane</a> <br />&nbsp;1.) 0 deg C, 20 min, 2.) 1 h;&nbsp;<br /> &nbsp;