Construction of All-Carbon Quaternary Centers through Cu-Catalyzed Sequential Carbene Migratory Insertion and Nucleophilic Substitution/Michael Addition
作者:Chengpeng Wang、Fei Ye、Chenggui Wu、Yan Zhang、Jianbo Wang
DOI:10.1021/acs.joc.5b01592
日期:2015.9.4
cross-coupling reaction of terminal alkyne, α-diazo ester, and alkyl halide has been developed. This transformation involves sequent migratory insertion of copper-carbene and nucleophilic substitution, in which a C(sp)–C(sp3) bond and a C(sp3)–C(sp3) bond are formed successively on a carbenic center. Michael addition acceptors can also be employed instead of alkyl halides that enable Michael addition to
已开发了末端炔烃,α-重氮酯和卤代烷的铜催化三组分交叉偶联反应。这种转变涉及随后的铜卡宾的迁移插入和亲核取代,其中C(sp)–C(sp 3)键和C(sp 3)–C(sp 3)键在羧基中心连续形成。也可以使用迈克尔加成受体代替烷基卤,这使迈克尔加成成为构建C(sp 3)–C(sp 3)键的替代方法。这种转变代表了建设全碳四元中心的一种高效方法。