Stereochemistry of 1,3-Diheterocyclanes:III.~1 Crystal and Molecular Structure and Conformations of cis- and trans-5-Phenoxy-1,3,2-dioxathiane 2-Oxides.

摘要

The stereisomers of 5-phenoxy-1,3,2-dioxathiane 2-oxide both exist as chair conformers with an axial S=O bond.The features of conformational behavior,distinguishing this diastereomeric pair from earlier studied are explained in terms of the conformational energies of substituents in the 1,3-dioxane series.