hydrogen; palladium on activated charcoal in tetrahydrofuran; dichloromethane P=3375.3 Torr; Yield given;

<b>Multi-step reaction with 4 steps<br /> </b>1: potassium carbonate / N,N-dimethyl-formamide / 5 h / 90 &deg;C<br />2: potassium hydroxide; water / ethanol / 1 h / |Reflux<br />3: thionyl chloride / 1 h / |Reflux<br />4: triethylamine / butanone / 3 h / 0 - 20 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: potassium carbonate / N,N-dimethyl-formamide / 5 h / 90 &deg;C<br />2: potassium hydroxide; water / ethanol / 1 h / |Reflux<br />3: thionyl chloride / 1 h / |Reflux<br />4: triethylamine / butanone / 3 h / 0 - 20 &deg;C<br /> <br /> &nbsp;