Abstract
A theoretical mechanism has been proposed for the reaction of vinylidene chloride with ethane-1,2-dithiol in the system hydrazine hydrate–potassium hydroxide on the basis of DFT quantum chemical calculations at the B3LYP/6-311++G(d,p) level of theory. The reaction includes two consecutive stages: dehydrochlorination of vinylidene chloride to chloroacetylene and nucleophilic addition of one thiol group of ethane-1,2-dithiol to the β-carbon atom of chloroacetylene, followed by closure of 2,3-dihydro-1,4-dithiine ring via nucleophilic substitution of chlorine by sulfur atom of the second thiol group.
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Original Russian Text © E.A. Chirkina, E.P. Levanova, L.B. Krivdin, 2017, published in Zhurnal Organicheskoi Khimii, 2017, Vol. 53, No. 7, pp. 974–983.
For communication V, see [1].
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Chirkina, E.A., Levanova, E.P. & Krivdin, L.B. Quantum chemical studies of mechanisms of organic reactions: VI. Reaction of ethane-1,2-dithiol with vinylidene chloride. Russ J Org Chem 53, 986–994 (2017). https://doi.org/10.1134/S1070428017070053
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DOI: https://doi.org/10.1134/S1070428017070053