Gold‐Catalyzed Carbocyclization/C=N Bond Formation Cascade of Alkyne‐Tethered Diazo Compounds with Benzo[
<i>c</i>
]isoxazoles for the Assembly of 4‐Iminonaphthalenones and Indenes
作者:Ming Bao、Xiongda Xie、Wenhao Hu、Xinfang Xu
DOI:10.1002/adsc.202100602
日期:2021.8.13
carbocyclization/C=N bond formation cascade reaction has been developed for the synthesis of polyfunctionalized 4-iminonaphthalenones and indenes in good to high yields under mild reaction conditions. The reaction goes through 5/6-endo-dig diazo-yne carbocyclization to form the endocyclic vinyl carbene species from corresponding alkyne-tethered diazo compounds, followed by electrophilic addition/N−O bond cleavage/aromatization
已经开发了金催化的碳环化/C=N 键形成级联反应,用于在温和的反应条件下以良好到高产率合成多官能化 4-亚氨基萘酮和茚。该反应通过 5/6 -endo-dig重氮-炔碳环化反应,从相应的炔烃连接的重氮化合物形成内环乙烯基卡宾,然后亲电加成/N-O 键断裂/芳构化序列与苯并[ c ]异恶唑,它具有 C=N 键形成过程。此外,所得产物可以高产率转化为多取代的 2-萘酚衍生物。