1: 89 percent / LiAlH4 / tetrahydrofuran / 1.5 h / Heating 2: 59 percent / CH2Cl2 / 24 h / Ambient temperature 3: LiAlH4 / tetrahydrofuran / 2 h / Heating View Scheme

<b>Multi-step reaction with 4 steps<br /> </b>1: 84 percent / 40percent aq. NaOH / 0 &deg;C<br />2: 34 percent / ethanol / 6 h / Heating<br />3: 74 percent / K₂CO₃ / benzene / 1.) reflux, 8 h, 2.) RT, 12 h<br />4: 95 percent / CuBr₂ / 1.5 h / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 65 percent / Na / ethanol / 1.5 h / Heating<br />2: 74 percent / K₂CO₃ / benzene / 1.) reflux, 8 h, 2.) RT, 12 h<br />3: 95 percent / CuBr₂ / 1.5 h / Heating<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '8128161', constants.ctx, '0')">copper(ll) bromide</a> <br />1.5&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 5 steps<br /> </b>1: 83 percent / POCl₃ / toluene / 3 h / Heating<br />2: 84 percent / 40percent aq. NaOH / 0 &deg;C<br />3: 34 percent / ethanol / 6 h / Heating<br />4: 74 percent / K₂CO₃ / benzene / 1.) reflux, 8 h, 2.) RT, 12 h<br />5: 95 percent / CuBr₂ / 1.5 h / Heating<br /> <br /> &nbsp;