ELECTROCHEMICAL STAGES IN A NEW METHOD OF THE PHENYLHYDRAZINE SYNTHESIS

An indirect three-stage method of the PhNHNH2 synthesis is proposed. I n the first stage, which involves the galvanostatic electrolysis of NH 4Cl in a heterogeneous medium (aqueous solution of NaCl and CCl4), a s olution containing NCl3 is produced with yields of 80% by substance an d 60% by current. In the second stage, an aqueous solution of NH2Cl wi th a 50-% yield (recalculated to NCl3) is obtained by the interaction between an NCl3 solution in CCl4 and an aqueous NH3 solution. In the l ast stage, PhNHNH2 is obtained with an similar to 70-% yield (recalcul ated to NH2Cl) via the reaction of an aqueous NH2Cl solution with PhNH 2 and NH3 in the presence of NaOH and gelatin.