Regioselective Ring-opening Reactions of 2,3-Epoxy Alcohols with Sodium Azide Supported on Zeolite CaY
作者:Makoto Onaka、Keisuke Sugita、Yusuke Izumi
DOI:10.1246/cl.1986.1327
日期:1986.8.5
Sodium azide supported on zeoliteCaY induces C-3 ring-opening of 2,3-epoxyalcohols 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.
A HIGHLY REGIO- AND STEREOSELECTIVE RING-OPENING OF 2,3-EPOXY ALCOHOLS WITH TRIMETHYLSILYL AZIDE-DIETHYLALUMINUM FLUORIDE SYSTEM
作者:Keiji Maruoka、Hiromi Sano、Hisashi Yamamoto
DOI:10.1246/cl.1985.599
日期:1985.5.5
A new approach to the mild and selective synthesis of 3-azidodiols has been described which involves a highly regio-and stereoselective ring-opening of 2,3-epoxy alcohols with trimethylsilyl azide and diethylaluminum fluoride.