Grubb's 2nd generation catalyst in toluene T=80°C; 4 h;

<b>Multi-step reaction with 2 steps<br /> </b>1.1: p-toluenesulfonic acid / 1 h / 120 &deg;C<br />1.2: 20 percent / heptane / 1 h / Heating<br />2.1: pyridine / toluene / 4 h / Heating<br /> <br /> &nbsp;