lithium aluminium tetrahydride in tetrahydrofuran Heating;

potassium hydroxide in ethanol 3 h; Heating;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1619616', constants.ctx, '0')">18-crown-6 ether</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3556712', constants.ctx, '0')">potassium <i>tert</i>-butylate</a> <br />&nbsp;1.) diethyl ether, 15 min; 2.) diethyl ether, 2 h at 0&deg;C then overnight at room temp.;&nbsp;&nbsp;Yield given. Multistep reaction;&nbsp;<br /> &nbsp;