A method of performing a chemical reaction includes reacting an allyl donor and a substrate in a reaction mixture, and forming a homoallylic alcohol in the reaction mixture. The substrate may be an aldehyde or a hemiacetal. The reaction mixture includes a ruthenium catalyst, carbon monoxide at a level of at least 1 equivalent relative to the substrate, and water at a level of at least 1 equivalent relative to the substrate, and an amine at a level of from 0 to 0.5 equivalent relative to the substrate. The reaction mixture may also include a halide, and the equivalents of the amine may be similar to those of the halide. The reacting includes maintaining the reaction mixture at a temperature of at least 40° C. The method may be catalytic in metal, environmentally benign, amenable to large-scale applications, and applicable to a wide range of substrates.
Stereoselective construction of quaternary carbons by the reaction of aldehydes with allylic chromium reagents prepared from 1,3-diene monoepoxides and chromium dichloride
作者:Osamu Fujimura、Kazuhiko Takai、Kiitiro Utimoto
DOI:10.1021/jo00293a007
日期:1990.3
CATALYSTS FOR EFFICIENT Z-SELECTIVE METATHESIS
申请人:Trustees of Boston College
公开号:US20140371454A1
公开(公告)日:2014-12-18
The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, provided compounds promote highly efficient and highly Z-selective metathesis. In some embodiments, provided compounds and methods are particularly useful for producing allyl alcohols. In some embodiments, provided compounds have the structure of formula I. In some embodiments, provided compounds comprise ruthenium, and a ligand bonded to ruthenium through a sulfur atom.