Selective Access to Trisubstituted Macrocyclic <i>E</i>- and <i>Z</i>-Alkenes from the Ring-Closing Metathesis of Vinylsiloxanes
作者:Yikai Wang、Miguel Jimenez、Patrick Sheehan、Cheng Zhong、Alvin W. Hung、Chun Pong Tam、Damian W. Young
DOI:10.1021/ol400134d
日期:2013.3.15
Macrocyclic (E)-alkenylsiloxanes, obtained from E-selective ring-closing metathesis reactions, can be converted to the corresponding (Z)-alkenyl bromides and (E)-alkenyl iodides allowing access to both E- and Z-trisubstituted macrocyclic alkenes. The reaction conditions and substrate scope of these stereoselective transformations are explored.