Simple, Stable, and Versatile Double-Allylation Reagents for the Stereoselective Preparation of Skeletally Diverse Compounds
作者:Feng Peng、Dennis G. Hall
DOI:10.1021/ja068985t
日期:2007.3.1
A new and efficient class of double-allylation reagents, α-trimethylsilylmethyl allylboronate 1 and the crotylboronates 12, is reported. These stable bimetallic reagents are prepared easily in enantiomericallypure form and add under BF3 catalysis onto a wide range of aldehydes to afford a direct access to hydroxyl-functionalized allylic silanes in very high E/Z selectivity and excellent enantioselectivity