Increasing the Structural Span of Alkyne Metathesis
作者:Peter Persich、Josep Llaveria、Rudy Lhermet、Teresa de Haro、Robert Stade、Azusa Kondoh、Alois Fürstner
DOI:10.1002/chem.201302320
日期:2013.9.23
new generation of alkyne metathesis catalysts, which are distinguished by high activity and an exquisite functional group tolerance, allows the scope of this transformation to be extended beyond its traditional range. They accept substrates that were previously found problematic or unreactive, such as propargyl alcohol derivatives, electron‐deficient and electron‐rich acetylenes of various types, and
On the stereochemical course of cuprate-mediated homoconjugate addition to an activated cyclopropane
作者:Douglass P. Taber、Kenneth H. Krewson、Krishna Raman、Arnold L. Rheingold
DOI:10.1016/s0040-4039(01)81584-7
日期:——
Cuprate-mediated homoconjugate addition to activated cyclopropane 6 is shown to proceed with inversion of absolute configuration at the apical carbon of the cyclopropane.
铜盐介导的均轭合物向活化的环丙烷6的添加显示出在环丙烷的顶碳处绝对构型的转化。
Process for producing 3-formylcyclopentanone derivatives
申请人:(Zaidanhojin) Sagami Chemical Research Center
公开号:US04073799A1
公开(公告)日:1978-02-14
A novel process for producing 3-formylcyclopentanone derivatives which are useful intermediates for syntheses of five-membered ring compounds such as prostaglandins is disclosed. In the process, 3-formylcyclopentanone derivatives are produced starting from .beta.-dicarbonyl compounds and azides through several-step reactions.