Abstract
The polarographic reduction of the sydnoneimmonium cation (I) was investigated in the case of 3-β-phenylisopropylsydnoneimine hydrochloride (sydnophen). The effect of the pH, alcohol concentration, ionic strength, and surface-active substances was studied, and the electrolysis was carried out at a controllable potential under various conditions. The cyclic voltampefograms were recorded. A mechanism for the reduction of I is proposed. Cleavage of the ring of I in the near-electrode space is observed in unbuffered media. The first direct proof of the existence of the unstable sydnoneimine base was obtained.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1042–1048, August, 1975.
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Kholodov, L.E., Kovalenko, T.A. & Polievktov, M.K. Investigation of the mechanism of the polarographic reduction of the sydnoneimmonium cation. Chem Heterocycl Compd 11, 909–914 (1975). https://doi.org/10.1007/BF00470488
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DOI: https://doi.org/10.1007/BF00470488