1: 63 percent / conc. sulphuric acid / 0.25 h / 95 °C 2: 69 percent / triethylamine / CHCl3 / 0.5 h / Heating View Scheme

1: 64 percent / AlCl3 / Ambient temperature 2: 66 percent / sym-collidine / Heating 3: 57 percent / AlCl3 / benzene / Ambient temperature View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '103233', constants.ctx, '0')">pyridine</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '969212', constants.ctx, '0')">benzene</a> <br />3&nbsp;h;&nbsp;<br /> &nbsp;