A. P. Engoyan, R. A. Kuroyan, K. S. Lusararyan
Mar 1, 1979
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Journal
Chemistry of Heterocyclic Compounds
Abstract
The three-dimensional structures of a number of diastereomeric 2-alkyl-4-formyltetrahydropyrans were studied by means of 1H and 13C NMR spectroscopy. It is shown that the 2,2-dialkyl derivatives are mixtures of two configurational isomers in which the formyl group is equatorially oriented. 2-Monoalkyl-4-formyltetrahydropyrans exist in the form of mixtures of two diastereomeric forms that have different orientations (axial and equatorial) of the formyl group; the alkyl group in both isomers is equatorially oriented.