Copper-Catalyzed Selective Oxidative Cross-Coupling of Tryptophols and Tryptamines To Access Heterocyclic 3a,3a′-Bisindolines
作者:Wei Wang、Shu-Yun Jiang、Jun-Rong Song、Wei Wu、Jun Shi、Zhi-Yao Li、Ying-Ai Wu、Qin Chi、Wei-Dong Pan、Hai Ren
DOI:10.1021/acs.orglett.2c00821
日期:2022.4.15
oxidant, resulting in the direct construction of a new class of heterocyclic 3a,3a′-bisindolines in moderate to good yields with high chemoselectivities. A series of mechanistic control experiments were also conducted, indicating that the copper catalyst selectively coordinates with the nitrogen moiety of the tryptamine to initiate the oxidation, and a nucleophilic-alkylation process is proposed for the
色氨酸和色胺的环化交叉偶联的第一个例子是通过以空气或氧杂酮为末端氧化剂的铜催化实现的,从而以中等至良好的产率直接构建了一类新的杂环 3a,3a'-双二氢吲哚。高化学选择性。还进行了一系列机械控制实验,表明铜催化剂选择性地与色胺的氮部分配位以引发氧化,并提出了反应中碳-碳键形成的亲核烷基化过程。这项工作中概述的新型合成策略和分子骨架为设计其他有用的反应和潜在药物提供了新的思路和概念。