作者:Ziyong Wang、Jason Wu、Walid Lamine、Bo Li、Jean‐Marc Sotiropoulos、Anna Chrostowska、Karinne Miqueu、Shih‐Yuan Liu
DOI:10.1002/anie.202108534
日期:2021.9.20
generated by a kinetically controlled halogen exchange between chlorocatecholborane and silylketene acetals, is described. These C−boron enolates are demonstrated to activate 1,3-enyne substrates in the presence of a Pd0/Senphos ligand complex, resulting in the first examples of a carboboration reaction of an alkyne with enolate-equivalent nucleophiles. Highly substituted dienyl boron building blocks are
描述了由氯儿茶酚硼烷和甲硅烷基烯酮缩醛之间的动力学控制的卤素交换产生的新的碳结合硼烯醇化物家族。这些 C-硼烯醇化物被证明在 Pd 0 /Senphos 配体配合物存在的情况下激活 1,3-烯炔底物,从而产生了炔烃与烯醇化物等效的亲核试剂发生碳硼化反应的第一个例子。通过所描述的催化顺式碳硼化反应,以优异的位点、区域和非对映选择性产生高度取代的二烯基硼结构单元。