T=230°C; 0.75 h;

<b>Multi-step reaction with 3 steps<br /> </b>1: 70 percent / conc. HCl / 2 h / Heating<br />2: 64 percent / 5percent sodium hydroxide / ethanol; H₂O / Ambient temperature<br />3: 90 percent / p-toluenesulphonic acid / benzene / 2 h / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 88 percent / Et₃N / benzene / 20 &deg;C<br />2: 51 percent / p-toluenesulfonic acid / ethanol / 4 h / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 5 steps<br /> </b>1: 73 percent / benzene / 6 h / Heating<br />2: 50 percent / 2percent potassium hydroxide / ethanol / roomtemp., -&gt; 40-45 deg C -&gt; reflux<br />3: 70 percent / conc. HCl / 2 h / Heating<br />4: 64 percent / 5percent sodium hydroxide / ethanol; H₂O / Ambient temperature<br />5: 90 percent / p-toluenesulphonic acid / benzene / 2 h / Heating<br /> <br /> &nbsp;