%0 Journal Article
%T Vinylic tellurides as precursors in a stereoselective and convergent route to Z-enynes and Z-trisubstituted enediynes
%A Araujo
%A Marcelo A. de
%A Raminelli
%A Cristiano
%A Comasseto
%A Jo£¿o V.
%J Journal of the Brazilian Chemical Society
%D 2004
%I Sociedade Brasileira de Qu¨ªmica, SBQ
%R 10.1590/S0103-50532004000300004
%X vinylic tellurides of z configuration are transformed into higher order z-vinyl cyanocuprates by transmetallation with higher order lithium dimethyl- or n-butyl(thienyl)cyanocuprates. reaction of the obtained z-vinyl cyanocuprates with zinc chloride gives presumably mixed zinc-copper species which react with bromoalkynes leading to enynes and enediynes with retention of the z double bond configuration.
%K z-vinylic tellurides
%K z-enynes
%K z-enediynes
%K stereoselective synthesis
%K convergent route.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-50532004000300004&lng=en&nrm=iso&tlng=en