Ruthenium-Catalyzed <i>trans</i>-Hydroalkynylation and <i>trans</i>-Chloroalkynylation of Internal Alkynes
作者:Nagaraju Barsu、Markus Leutzsch、Alois Fürstner
DOI:10.1021/jacs.0c08582
日期:2020.11.4
[Cp*RuCl]4 catalyzes the addition of iPr3SiC≡CX (X = H, Cl) across internal alkynes with formation of 1,3-enyne or 1-chloro-1,3-enyne derivatives, respectively; the reaction follows an unorthodox trans-addition mode. The well-balanced affinities of the different reaction partners to the ruthenium catalyst ensure that crossed addition prevails over homodimerization of the individual components, as can
[Cp*RuCl]4 催化 iPr3SiC≡CX (X = H, Cl) 通过内部炔烃的加成,分别形成 1,3-enyne 或 1-chloro-1,3-enyne 衍生物;该反应遵循非正统的反式加成模式。不同反应伙伴对钌催化剂的良好平衡的亲和力确保交叉加成优于单个组分的均二聚,这可以从各种中间体的光谱和晶体数据推断出来;这包括一个双核复合物,其中内部炔烃桥接两个 [Cp*RuCl] 片段。