Abstract
The action of chlorine and bromine on 2-aryloxy-3,4-dihydropyrans has been studied; a series of 6-aryloxy-2, 3-dihalogenotetrahydropyrans has been obtained. The stability of the compounds synthesized rises with the introduction of electron-accepting substituents into the benzene ring. On being heated in the presence of alkalis, they split off a molecule of hydrogen halide and open the tetrahydropyran ring.
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For part VII, see [1].
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Skvortsova, G.G., Kozyrev, V.G., Zapunnaya, K.V. et al. Aryloxydihydropyrans. Chem Heterocycl Compd 6, 403–405 (1970). https://doi.org/10.1007/BF00478376
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DOI: https://doi.org/10.1007/BF00478376