1: 92 percent / H2 / 5percent Pd-C / ethanol / 4 h / Ambient temperature 2: 97 percent / 35percent HCl / 0.02 h / 80 °C View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '472690', constants.ctx, '0')">toluene-4-sulfonic acid</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '505945', constants.ctx, '0')">ethylene glycol</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '969212', constants.ctx, '0')">benzene</a> <br /> <br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '472690', constants.ctx, '0')">toluene-4-sulfonic acid</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '969212', constants.ctx, '0')">benzene</a> <br />18&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;