Cu-Catalyzed Oxidative 3-Amination of Indoles via Formation of Indolyl(aryl)iodonium Imides Using o-Substituted (Diacetoxyiodo)arene as a High-Performance Hypervalent Iodine Compound
作者:Kazuhiro Watanabe、Katsuhiko Moriyama
DOI:10.3390/molecules24061147
日期:——
An oxidative 3-amination of indole derivatives using hypervalent iodine(III) and bissulfonimides, which proceeds via the formation of indolyl(aryl)iodonium imides, was developed. This reaction was followed by an indole-selective copper-catalyzed oxidativeC–Ncoupling reaction to obtain 3-amino indole derivatives as single regioisomers. o-Alkoxy(diacetoxyiodo)arenes showed higher reactivity in the
Ruthenium‐Catalyzed Vinylene Carbonate Annulation by C−H/N−H Functionalizations: Step‐Economical Access to Indoles
作者:Yao Yu、Yang Wang、Bo Li、Yuqiang Tan、Huan Zhao、Zheyu Li、Chunran Zhang、Wenbo Ma
DOI:10.1002/adsc.202101466
日期:2022.2.15
A convenient and effective method of ruthenium-catalyzed C−H/N−H annulations using vinylene carbonate as oxidizing acetylene surrogate has been disclosed. This method is scalable and compatible with a wide range of functional groups, providing a step-economical access to indolesynthesis Preliminary mechanistic studies provided support for a reversible, acetate-assisted C−H ruthenation, along with
Elements of Regiocontrol in Palladium-Catalyzed Oxidative Arene Cross-Coupling
作者:David R. Stuart、Elisia Villemure、Keith Fagnou
DOI:10.1021/ja0745862
日期:2007.10.1
By changing the stoichiometric oxidant and modifying the indole N-substituent in palladium-catalyzedoxidativearene cross-coupling reactions, both C2 and C3 oxidative indole arylation can be achie...
作者:Jiahang Lv、Xiangyang Chen、Xiao-Song Xue、Binlin Zhao、Yong Liang、Minyan Wang、Liqun Jin、Yu Yuan、Ying Han、Yue Zhao、Yi Lu、Jing Zhao、Wei-Yin Sun、Kendall. N. Houk、Zhuangzhi Shi
DOI:10.1038/s41586-019-1640-2
日期:2019.11.14
and organic materials.1 The discovery of simpler, milder and more efficient approaches to organoborons opens a route to diverse substances.2-5 Here we show a general method of directedC-Hactivation for site-selective C-H borylation of arenes and heteroarenes avoiding the use of metal catalysts. C7 and C4-borylated indoles are produced by a mild approach with broad functional group compatibility
Metal-Free Oxidative Dearomatization–Alkoxylation/Acyloxylation of Indoles: Synthesis of 2-Monosubstituted Indolin-3-ones
作者:Yuxin Zhang、Bingbing Duan、Lingling Zhou、Xiangrui Song、Zengqiang Song
DOI:10.1021/acs.orglett.3c03011
日期:2023.10.27
This transformation is easy to scale up, and the desired products can be further modified. Most importantly, this method is suitable for the late-stage modification of bioactive molecules. Mechanism studies show that this transformation involves metal-free radical dearomatization and oxygenation. Furthermore, this method also provides a practical and efficient way to prepare indolin-3-ones from commercially