A Combination of Allyltitanation and Tandem Aldol-Tischtschenko Reactions Using Tetraisopropoxytitanium
作者:Christophe Delas、Claude Moïse
DOI:10.1055/s-2000-6247
日期:——
An allyltitanation reaction coupled with a tandem aldol-Tischtschenko reaction catalyzed by tetraisopropoxytitanium allows the access to stereocontrolled polypropionate systems in two steps.
Study of a tandem aldol–Tischtschenko reaction between chiral enolsilanes and aldehydes catalyzed by titanium(IV) isopropoxide
作者:Christophe Delas、Olivier Blacque、Claude Moïse
DOI:10.1039/b002008g
日期:——
The synthesis and structure determination of polypropionate is presented. An allyltitanium complex is first used in an allyltitanation reaction; titanium(IV) isopropoxide is next utilized as catalyst in an aldol–Tischtschenko reaction. This method promotes the formation of esters bearing five or six stereocenters in two steps with a very high level of diastereoselectivity and very high yield.