Abstract
Depending on the degree of substitution of the thiopyran ring, either oxidation at the sulfur atom, which leads to the formation of the 1,1-dioxide, or dehydrogenation of the heteroring in the C(4) position may occur in the reaction of 4H-thiopyrans with hydrogen peroxide in acetic acid. In the case of dehydrogenation the composition of the products depends on the nature of the starting 4H-thiopyran. Some peculiarities of the structure of 4H-thiopyrans that promote their conversion to 1,1-dioxides were ascertained.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1042–1046, August, 1985.
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Kozhevnikova, N.I., Kharchenko, V.G. Effect of substituents on the nature of the products of oxidation of 4H-thiopyrans. Chem Heterocycl Compd 21, 868–871 (1985). https://doi.org/10.1007/BF00519811
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DOI: https://doi.org/10.1007/BF00519811