sodium chloride in dimethyl sulfoxide T=145°C; 3 h;

1: sodium chloride / dimethyl sulfoxide / 3 h / 145 °C 2: lithium aluminium tetrahydride / tetrahydrofuran / 4 h / 20 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: potassium <i>tert</i>-butylate / tetrahydrofuran / 72 h / 20 &deg;C / Molecular sieve<br />2: toluene-4-sulfonic acid / toluene / 18 h / Reflux<br /> <br /> &nbsp;