1: 69 percent / glacial AcOH / ethanol / 5 h / Heating 2: 1) glacial AcOH, HCl, NaNO2 2) pyridine / 1) water, 0-5 deg C 2) r.t., overnight View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '4933273', constants.ctx, '0')">hydrazine hydrate</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1718733', constants.ctx, '0')">ethanol</a> <br />8&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 80 percent / 0.33 h / 140 &deg;C<br />2: 75 percent / 99percent N₂H₄*H₂O / ethanol / 8 h / Heating<br /> <br /> &nbsp;