1: AgClO4 / acetonitrile 2: (heating) View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 56 percent / benzene / 4.5 h / Heating<br />2: 83 percent / tert-BuOK / tetrahydrofuran / 72 h / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: KOtBu<br />2: KOtBu / 2-methyl-propan-2-ol / Heating<br /> <br /> &nbsp;