Regioselective Ring-opening Reactions of 2,3-Epoxy Alcohols with Sodium Azide Supported on Zeolite CaY

Abstract
Sodium azide supported on zeolite CaY induces C-3 ring-opening of 2,3-epoxy alcohols to afford 3-azido-1,2-diols in much higher regioselectivity than a conventional reagent system of Na3–NH4Cl in MeOH–H2O. The cation in zeolite greatly influences the regioselectivity of the reaction.