trichlorophosphate in chloroform T=40°C; 2 h;

<b>Multi-step reaction with 3 steps<br /> </b>1: sodium acetate; acetic anhydride<br />2: hydrazine hydrate / ethanol / 0.5 h<br />3: acetic acid / ethanol / 1 h / 60 &deg;C<br /> <br /> &nbsp;