hydrazine hydrate in methanol 2.5 h; Heating;

<b>Multi-step reaction with 3 steps<br /> </b>1: 61 percent / N-bromosuccinimide, benzoyl peroxide / CCl₄ / 6 h / Heating<br />2: 41 percent / dimethylformamide / 48 h / 50 &deg;C<br />3: 41 percent / aq. HI / 5 h / Heating<br /> <br /> &nbsp;