CONFORMATIONAL ANALYSIS OF TRANS-2,3-DIARYLOXY-1,4-DIOXANES. A TOOL FOR DISCRIMINATING BETWEEN STERIC AND ELECTRONIC EFFECTS IN THE POSITION OF THE CONFORMATIONAL EQUILIBRIA OF SUBSTITUTED DIOXANES

Article abstract of DOI:10.1016/S0040-4020(01)91399-7

The conformation of several trans-2,3-diaryloxy-1,4-dioxanes has been studied using 1H NMR techniques.Trans-2,3-bis(4-nitrophenoxy)-1,4-dioxane and trans-2,3-bis(4-methoxyphenoxy)-1,4-dioxane have been found to be predominantly (<*>98percent) in diaxial c