acide oxalique; silica gel in water

<b>Multi-step reaction with 2 steps<br /> </b>1: (i) Pd-BaSO₄, quinoline, sulfur, xylene, (ii) /BRN= 605384/<br />2: (i) liq. NH₃, (ii) NaNH₂ <br /> <br /> &nbsp;

&nbsp;(i) liq. NH₃, (ii) NaNH₂;&nbsp;&nbsp;Multistep reaction;&nbsp;<br /> &nbsp;