New Zirconium-Mediated Approach Toward Regio- and Stereocontrolled Synthesis of <i>trans</i>-Enediynes
作者:Yuanhong Liu、Hongjun Gao
DOI:10.1021/ol052706+
日期:2006.1.1
reactions of alpha-alkynylated zirconacyclopentene based on 1,4-bis(trimethylsilyl)-1,3-butadiyne with unsaturated compounds are described, which provide an efficient, regio- and stereocontrollable synthesis of trans-enediynes in a one-pot procedure. An interesting alkynyl group shift from alpha- to beta-position of the zirconium center during the reaction was observed, which was accountable for the novel