Action du chloroallyllithium sur les aldehydes et les cetones: synthese en une etape d'alcools β-ethyleniques γ-chlores de configuration z et d'epoxydes α-ethyleniques bi- ou tri-substitues
作者:A. Doucoure、B. Mauze、L. Miginiac
DOI:10.1016/s0022-328x(00)87068-0
日期:1982.9
Chloroallyllithium readily reacts with aliphatic and aromatic aldehydes and ketones to produce, in a one-step reaction, Z-γ-chlorinated-β-ethylenic alcohols and bi- or tri-substituted epoxides.
A new and efficient catalytic isomerization of cis - and trans -epoxides
作者:Ching-Yu Lo、Sitaram Pal、Arjan Odedra、Rai-Shung Liu
DOI:10.1016/s0040-4039(03)00465-9
日期:2003.4
We report new ruthenium-catalyzed cis–trans isomerization of various functionalized epoxides. Enantiospecific isomerization of chiral epoxides is achieved without loss of enantiopurity, and epimerization occurs only at the epoxide carbon of the activating group.