1: 100 percent / 30percent aq. H2O2, acetic acid / 8 h / 0 °C 2: 1.) KH / 1.) THF, 2.) THF, reflux, 3 h 3: 95 percent / AlCl3 / CH2Cl2 / 0.17 h / Ambient temperature View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '605283', constants.ctx, '0')">triethylamine</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1098229', constants.ctx, '0')">methanol</a> <br />0.75&nbsp;h;&nbsp;&nbsp;Ambient temperature;&nbsp;<br /> &nbsp;