The selective control over multiple competing C–H sites would enable straightforward access to functionalized indoles. In this context, we report here a modular and selective C–H arylation of indoles following the micellar catalysis approach using the third generation “designer” surfactant SPGS-550-M in the presence of 1 mol% of [(cinnamyl)PdCl]2 under mild conditions. Thus, access to high value C-arylated
Water-medium C–H activation over a hydrophobic perfluoroalkane-decorated metal-organic framework platform
作者:Yuan-Biao Huang、Min Shen、Xusheng Wang、Ping Huang、Ruiping Chen、Zu-Jin Lin、Rong Cao
DOI:10.1016/j.jcat.2015.10.012
日期:2016.1
as a hydrophobic platform to encapsulate ultrafine palladiumnanoparticles (Pd NPs) for C–H activation in water. The resultant Pd NPs stabilized by the perfluoroalkane exhibited high activity and regioselectivity in the direct C–H arylation of indoles in water. The introduction of perfluoroalkane chains into the mesoporous pores of NU-1000 provides hydrophobic surfaces to facilitate access of the reactants
Palladium-Catalyzed Direct Arylation of Indoles with Cyclohexanones
作者:Shanping Chen、Yunfeng Liao、Feng Zhao、Hongrui Qi、Saiwen Liu、Guo-Jun Deng
DOI:10.1021/ol500231c
日期:2014.3.21
A novel palladium catalyzed approach to 3-arylindoles was developed from indoles and cyclohexanones. Various cyclohexanones acted as aryl sources via an alkylation and dehydrogenation sequence using molecular oxygen as the hydrogen acceptor. This method showed good regioselectivity and afforded 3-arylindoles as the sole products.
Direct palladium-catalyzed C-3 arylation of indoles
作者:Zhiqiang Zhang、Zhizhi Hu、Zhixiao Yu、Peng Lei、Haijun Chi、Yue Wang、Ren He
DOI:10.1016/j.tetlet.2007.01.173
日期:2007.3
An efficient protocol for palladium-catalyzeddirectC-3arylation of indoles containing unprotected heterocyclic nitrogen atom has been developed.
已开发出一种用于钯催化含有未保护的杂环氮原子的吲哚的直接C-3芳基化的有效方案。
Palladium-Catalyzed Indole and Azaindole Synthesis by Direct Annulation of Electron-Poor<i>o</i>-Chloroanilines and<i>o</i>-Chloroaminopyridines with Aldehydes
for the synthesis of 2-unsubstituted indolesand azaindoles has been developed by the palladium-catalyzed directannulation of electron-poor O-chloro/bromoanilines and O-chloroaminopyridines with aldehydes.Coupled with the previous results of Jia and Zhu, this allows rapidaccess to a variety of 2-unsubstituted indoles and azaindoles startingfrom simple and easily accessible precursors.