Regio- and stereoselective synthesis of Z-vinylic tellurides from propargylic alcohols: A route to chiral Z-enynes

Article abstract of DOI:10.1016/j.tet.2004.10.087

tert-Butyldimethylsilyl ethers of propargylic alcohols are hydrotellurated regioselectively to give 1,2-Z-vinylic tellurides. Enantiomerically pure propargylic alcohols give enantiomerically pure vinylic tellurides, which are coupled with alkynes under Pd