In this account the authors' latest results in C-C coupling catalysis are reviewed. First, an efficient catalytic system for the Kumada-Tamao-Corriu coupling reaction based on NHC-phosphine (NHC = N-heterocyclic carbene) nickel complexes is presented. Then the use of palladium complexes of chiral ferrocenyl NHC-phosphines in the asymmetric Suzuki-Miyaura coupling reaction is reported. High catalytic activities and moderate enantioselectivities (ee up to 46%) were obtained. Chiral ferrocenyl phosphine-ethers were also tested in the asymmetric Suzuki-Miyaura reaction yielding good activities and moderate enantioselectivities (ee up to 37%). Finally, the original synthesis of a ferrocenyl rhodium(III) complex and its successful use as catalyst for a C-C coupling reaction via C-H activation of 2-phenylpyridine is presented.
在这篇报道中,作者回顾了他们在C-C偶联催化方面的最新成果。首先,介绍了一种基于NHC-膦(NHC = N-杂环卡宾)
镍复合物的高效催化体系,用于Kumada-Tamao-Corriu偶联反应。然后,报告了手性
二茂铁NHC-膦的
钯复合物在不对称Suzuki-Miyaura偶联反应中的应用,获得了高催化活性和适中的对映选择性(对映体富集率高达46%)。手性
二茂铁膦醚在不对称Suzuki-Miyaura反应中也进行了测试,表现出良好的催化活性和适中的对映选择性(对映体富集率高达37%)。最后,介绍了一种
二茂铁铑(III)复合物的原创合成及其成功作为催化剂通过C-H活化
2-苯基吡啶进行C-C偶联反应的应用。