Abstract
The electroreduction of benzo-1,2,3-dithiazolium cations and their selenium analogs in aprotic solvents takes place in two steps. The first step is a reversible, one-electron transfer leading to the formation of stable radicals detected by EPR. As a result of further electroreduction, the radicals obtained combine with six electrons to form the corresponding o-aminothio(seleno)phenols. Analysis of the reduction potentials of the compounds studied shows that the substitution of a selenium atom for a sulfur in these cations, especially in the 2 position of the heterocycle, facilitates their electrochemical reduction. The electrochemical activity and the kinetics of nulceophilic substitution in the cations studied are compared.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 219–222, February, 1985.
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Tsveniashvili, V.S., Malashkhiya, M.V., Gaprindashvili, V.N. et al. Electroreduction of benzo-1,2,3-dithiazolium salts and their selenium analogs in nonaqueous solution. Chem Heterocycl Compd 21, 181–184 (1985). https://doi.org/10.1007/BF00504205
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DOI: https://doi.org/10.1007/BF00504205