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
[反应:见正文]描述了基于1,4-双(三甲基甲硅烷基)-1,3-丁二炔的α-炔基化氧化锆环戊烯与不饱和化合物的偶联反应,可提供高效,区域和立体可控的反式二烯炔合成一锅程序。在反应过程中观察到了一个有趣的炔基从锆中心的α-到β-位置的转变,这是向反烯二炔的新转变的原因。