Electrolytic Process for the Preparation of Dianisidine Using Rotating Cathode Cell for the Reduction of <I>o</I>-Nitroanisole to Hydrazoanisole
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概要
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The technique of using rotating cathodes for electrolytic reduction of nitro compounds developed in this Institute earlier has now been extended to the study of the reduction of <I>o</I>-nitroanisole in an alkaline emulsion to obtain hydrazoanisole, which is subsequently converted to dianisidine by reaction with acid. The various chemical methods of obtaining hydrazoanisole as well as the previous attempts for obtaining the same by electrolytic reduction of <I>o</I>-nitroanisole are briefly reviewed.<BR>The experimental technique adopted, the isolation of the product and the subsequent conversion of the hydrazoanisole to dianisidine are described.<BR>Cathode potential has been measured at different current densities using lead deposited iron cathode under stationary and rotating condition of the cathode without the addition of nitro compound. The effect of the nitro compound addition on the cathode potential at different current densities has also been studied. The potential of a rotating cathode measured during the course of an experiment is graphically presented and the results discussed.
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