Electrochemical synthesis of heterocyclic compounds. Part 6. The redox behaviour of the formazan–tetrazolium salt system in acetonitrile
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 2,p. 166-171
- https://doi.org/10.1039/p29790000166
Abstract
The synthesis in quantitative yield of 2,3,5-triaryltetrazolium salts by anodic oxidation of formazans is described. The redox behaviour of the 1,3,5-triphenylformazan–2,3,5-triphenyltetrazolium perchlorate system was studied in detail using electroanalytical techniques. It is concluded that two-electron oxidative cyclisation of formazan to tetrazolium salt occurs through an e-c-P-e-(d) mechanism, using the nomenclature of Andrieux and Savéant. The reduction of the tetrazolium salt to the formazan goes by opposite mechanistic pathways (e-P-c-e) to those for the electrochemical oxidation of formazan.Keywords
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