Alkenes from cyclic sulfates and thionocarbonates of 1,2-diols via tellurium chemistry
作者:Bin Chao、Kenneth C. McNulty、Donald C. Dittmer
DOI:10.1016/0040-4039(95)01532-m
日期:1995.10
stereospecific, e.g. meso-2,3-diphenylethane 2,3-diol → cis-stilbene; d,l-2,3-diphenylethane-2,3-diol → trans-stilbene. Unsaturated mannose and ribose derivatives have been obtained, and diethyl (-)-tartrate gives diethyl fumarate. The reaction may be performed with 0.1 equiv or less of elemental tellurium in the presence of a stoichiometric amount of reducing agent. Reaction of telluride ion with cyclic thionocarbonates