Ni-Catalyzed Suzuki–Miyaura Cross-Coupling of α-Oxo-vinylsulfones To Prepare <i>C</i>-Aryl Glycals and Acyclic Vinyl Ethers
作者:Liang Gong、Hong-Bao Sun、Li-Fan Deng、Xia Zhang、Jie Liu、Shengyong Yang、Dawen Niu
DOI:10.1021/jacs.9b02312
日期:2019.5.15
electrophiles in Ni-catalyzed Suzuki-Miyaura cross-coupling reactions. The C-sulfone bond in the α-oxo-vinylsulfone motif is cleaved chemoselectively in these reactions, furnishing C-aryl glycals or acyclic vinyl ethers in high yields. These reactions proceed under mild conditions and tolerate a remarkable scope of heterocycles and functional groups. Preliminary mechanistic studies revealed the importance of
我们证明,在 Ni 催化的 Suzuki-Miyaura 交叉偶联反应中,容易获得且工作台稳定的 α-氧代乙烯基砜是有能力的亲电试剂。在这些反应中,α-氧代-乙烯基砜基序中的 C-砜键被化学选择性地裂解,以高产率提供 C-芳基乙二醇或无环乙烯基醚。这些反应在温和的条件下进行,并且可以耐受范围广泛的杂环和官能团。初步的机理研究揭示了 α-杂原子在促进这些转变中的重要性。