sulfuric acid in tetrahydrofuran; water T=0 - 30°C; 40.25 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: triethylamine / dichloromethane / 0 - 5 &deg;C / Inert atmosphere<br />2: 4-(N,N-dimethlyamino)pyridine / toluene<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '110354', constants.ctx, '0')">4-(N,N-dimethlyamino)pyridine</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '635760', constants.ctx, '0')">toluene</a> <br /> <br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: perchloric acid / methanol / 7.5 h / 25 - 30 &deg;C / Reflux<br />2: toluene-4-sulfonic acid / toluene / 20 &deg;C / Reflux<br />3: triethylamine / dichloromethane / 0 - 5 &deg;C / Inert atmosphere<br />4: 4-(N,N-dimethlyamino)pyridine / toluene<br /> <br /> &nbsp;