sulfuric acid 15 h; Ambient temperature;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3678841', constants.ctx, '0')">magnesium diethoxide</a> <br />&nbsp;1.) toluene, 2 h, reflux, 2.) methylene chloride, tetrahydrofuran, 1 h, 0-5 deg C then r.t.;&nbsp;&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3678841', constants.ctx, '0')">magnesium diethoxide</a> <br />&nbsp;1.) toluene, 2 h, reflux, 2.) toluene, acetonitrile, 2 h, r.t.;&nbsp;&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;