Abstract
It is shown that polarization of the endocyclic double bond in the electrophilic addition of alcohols and water to 2-formyl-2,5-dialkoxy-2,3-dihydro-γ-pyrans is directed toward the carbon atom in the 6 position.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 602–605, May, 1975.
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Keiko, N.A., Stepanova, L.G., Kalikhman, I.D. et al. Electrophilic addition to 2-formyl-2,5-dialkoxy-2, 3-dihydro-γ-pyrans. Chem Heterocycl Compd 11, 526–528 (1975). https://doi.org/10.1007/BF00480470
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DOI: https://doi.org/10.1007/BF00480470