Ruthenium-Catalyzed Oxidative Cross-Coupling Reaction of Activated Olefins with Vinyl Boronates for the Synthesis of (<i>E</i>,<i>E</i>)-1,3-Dienes
作者:Dattatraya H. Dethe、Nagabhushana C. Beeralingappa、Amar Uike
DOI:10.1021/acs.joc.0c02823
日期:2021.2.19
An oxidativecross-coupling reaction between activated olefins and vinyl boronate derivatives has been developed for the highly stereoselective construction of synthetically useful (E,E)-1,3-dienes. The highlight of this reaction is that exclusive stereoselectivity (only E,E-isomer) was achieved from a base-free, ligand-free, and mild catalytic condition with a less expensive [RuCl2(p-cymene)]2 catalyst
Peptide-Catalyzed Regio- and Enantioselective Reduction of α,β,γ,δ-Unsaturated Aldehydes
作者:Kengo Akagawa、Jun Sen、Kazuaki Kudo
DOI:10.1002/anie.201305004
日期:2013.10.25
in the title reaction. The inherent regioselectivity was overcome by the peptide catalyst to promote the 1,6‐selective reaction prior to 1,4‐reduction. High stereoconvergence was also achieved when using a mixture of geometric isomers of the starting aldehydes. Ach=1‐amino‐1‐cyclohexanecarboxylic acid.