1: 97 percent / aq. H2SO4 / tetrahydrofuran / Heating 2: aq. AcOH, EtOH / 0 °C 3: 92 percent / POCl3, py / 1.) room temperature, 3 h, 2.) reflux, 10 min View Scheme

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a> <br />T=0&deg;C;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 92 percent / Al₂O₃ / tetrahydrofuran / 10 h / 40 &deg;C<br />2: 91 percent / diethyl ether / 0 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: 1.) H⁽¹⁺⁾, 2.) LiAlH₄ / 1.) C₆H₆, 2.) THF, 3.) Collins, CH₂Cl₂ <br />2: 94 percent<br />3: 92 percent / Al₂O₃ / tetrahydrofuran / 10 h / 40 &deg;C<br />4: 91 percent / diethyl ether / 0 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 94 percent<br />2: 92 percent / Al₂O₃ / tetrahydrofuran / 10 h / 40 &deg;C<br />3: 91 percent / diethyl ether / 0 &deg;C<br /> <br /> &nbsp;