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Journal of Applied Electrochemistry

, Volume 17, Issue 6, pp 1228–1233 | Cite as

Anodic oxidation of o-toluenesulphonamide to saccharine on a NiO(OH)-coated nickel anode

  • Jaromír Hlavatý
  • Viktor Bakos
  • Jiří Volke
Papers

Abstract

o-Toluenesulphonamide has been electrolytically oxidized at low current density to saccharine in aqueous solutions of alkali carbonates on anodes coated with NiO(OH). This electrolytic oxidation led to a 40% yield of saccharine. The application of carbon and glassy-carbon counter electrodes or of various supports for the working electrodes did not result in improved saccharine yield. Moreover, the choice of a different potential and a different current density or the use of organic co-solvents did not substantially affect the course of the electrolytic oxidation.

In the electrolytic oxidation ofo-toluenesulphonamide a parasitic evolution of oxygen occurred which caused a partial degradation of the starting material. In strongly alkaline media, i.e. in aqueous solutions of alkali hydroxides, a fission of the NH2 group with formation ofo-toluenesulphonate occurred during the electrolysis.

Keywords

Oxidation Oxygen Physical Chemistry Nickel Aqueous Solution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1987

Authors and Affiliations

  • Jaromír Hlavatý
    • 1
  • Viktor Bakos
    • 1
  • Jiří Volke
    • 1
  1. 1.J. Heyrovský Institute of Physical Chemistry and ElectrochemistryCzechoslovak Academy of SciencesPrague 1Czechoslovakia

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