Abstract
Autoreduction of 2,2,6,6-tetramethyl-1,4-dioxopiperidinium ion to nitroxyl radical in alkaline medium involves a number of parallel and consecutive reactions. The primary products of the reaction of 2,2,6,6-tetramethyl-1,4-dioxopiperidinium with hydroxide ion are three nitroso compounds and N-hydroxy-2,2,6,6-tetramethylpiperidine N-oxide. Isomerization of the nitroso compounds and elimination of acetone from the N-oxide give cyclic hydroxylamines which reduce the initial cation to nitroxyl radical, being oxidized to nitrones.
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Original Russian Text © V.A. Golubev, V.D. Sen’, 2011, published in Zhurnal Organicheskoi Khimii, 2011, Vol. 47, No. 6, pp. 854–861.
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Golubev, V.A., Sen’, V.D. Mechanism of autoreduction of 2,2,6,6-tetramethyl-1,4-dioxopiperidinium cation in alkaline medium. Russ J Org Chem 47, 869–876 (2011). https://doi.org/10.1134/S1070428011060066
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DOI: https://doi.org/10.1134/S1070428011060066