Abstract:
The fundamental possibility of the synthesis of 2-substituted 1,3-dioxanes by reaction of 1,3-dioxanium perchlorates with organometallic compounds is demonstrated. A method for the synthesis of acyl derivatives of heterocycles was developed on the basis of these compounds. The existence of 2,2,4,4-substituted 1,3-dioxanes in the twist conformation was shown by 1H NMR spectroscopy; the twist conformation is explained by the effect of nonbonded 1,3-syn-axial interactions. © 1979 Plenum Publishing Corporation.