Abstract
Selenium tetrahalides generated from selenium dioxide and hydrogen halides (HCl, HBr) reacted with hex-1-ene, hept-1-ene, and oct-1-ene at a SeO2‒alkene molar ratio of 1: 2 to give mixtures of dihalobis-(2-haloalkyl)-λ4-selanes (yield 80‒90%) and bis(2-haloalkyl) selenides (yield 5‒12%). Halogenation of the resulting mixtures afforded 85‒93% (calculated on the initial SeO2) of the corresponding dihalobis(2-haloalkyl)-λ4-selanes, and the reduction of the same mixtures with Na2S2O5 gave bis(2-haloalkyl) selenides in 80‒86% yield. In the reaction with a SeO2‒alkene ratio of 5: 8, pure dihalobis(2-haloalkyl)-λ4-selanes were formed in 84‒93% yield. Dichlorobis(2-chloro-2-phenylethyl)-λ4-selane was obtained in 72% yield in the reaction of SeO2‒HCl with styrene.
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Original Russian Text © M.V. Musalov, E.O. Kurkutov, V.A. Potapov, A.G. Khabibulina, A.I. Albanov, S.V. Amosova, 2017, published in Zhurnal Organicheskoi Khimii, 2017, Vol. 53, No. 12, pp. 1774–1779.
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Musalov, M.V., Kurkutov, E.O., Potapov, V.A. et al. Synthesis of bis(2-haloalkyl) selanes and selenides based on selenium dioxide and terminal alkenes. Russ J Org Chem 53, 1809–1814 (2017). https://doi.org/10.1134/S1070428017120041
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DOI: https://doi.org/10.1134/S1070428017120041