Abstract
Cyclic voltammetric and preparative scale investigations on the electroreduction of (o-nitrotoluene (ONT), m-nitrotoluene (MNT), p-nitrotoluene (PNT) and 2,4-dinitrotoluene (DNT) to their corresponding toluidines in 1 m H2SO4 using thermally coated Ti/TiO2 electrode are reported. In the cyclic voltammetric time scales inhibitive adsorption which decreased in the order i p ONT > i p MNT > i p PNT > i p DNT was noticed. The heterogeneous redox catalytic currents were also found to decrease in the same order. In preparative electrolysis, these inhibitive effects became unimportant. Yields around 90% were achieved for all four nitro compounds. The thermally coated Ti/TiO2 electrode could be reused at least five times without any loss in yield and current efficiency.
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Ravichandran, C., Noel, M. & Anantharaman, P.N. Electrosynthesis of toluidines using thermally coated Ti/TiO2 electrodes. J Appl Electrochem 24, 965–969 (1994). https://doi.org/10.1007/BF00241185
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DOI: https://doi.org/10.1007/BF00241185