triethylamine in ethanol Reflux;

<b>Multi-step reaction with 3 steps<br /> </b>1: K₂CO₃ / acetone / 20 h / Heating<br />2: 99percent hydrazine hydrate / ethanol / 10 h / Heating<br />3: 95 percent / aq. ethanol / 4 h / Heating<br /> <br /> &nbsp;