Stereoselective synthesis of (Z)- or (E)-β-bromovinyl tellurides and their application in the synthesis of trisubstituted alkenes

Article abstract of DOI:10.1016/0040-4039(96)01615-2

Reaction of aryltellurium tribromides with alkynes in methanol affords (E)-β-bromovinyl aryltellurium dibromides and in benzene gives the (Z)-isomer, which can be reduced by sodium borohydride to yield (Z) or (E)-β-bromovinyl tellurides respectively.