Iridium(III)-Catalyzed Regiocontrolled Direct Amidation of Isoquinolones and Pyridones
作者:Debapratim Das、Rajarshi Samanta
DOI:10.1002/adsc.201701244
日期:2018.1.17
Iridium(III)‐catalyzed highly regiocontrolled C3/C8 amidation of isoquinolones and C6 amidation of 2‐pyridones has been successfully accomplished with various azides. The optimized method is operationally simple with a broad substrate scope. The protocol has been found to be scalable.
The C-H indolation of heteroarenes was realized using the benziodoxolone hypervalent iodine reagents indoleBXs. Functionalization of the C-H bond in bipyridinones and quinoline N-oxides catalyzed by a rhodium complex allowed to incorporate indole rings into aza-heteroaromatic compounds. These new transformations displayed complete regioselectivity for the C-6 position of bipyridinones and the C-8 position
Rh(I)‐Catalyzed Direct C6−H Arylation of 2‐Pyridones with Aryl Carboxylic Acids
作者:Haoqiang Zhao、Jianbin Xu、Xin Xu、Yixiao Pan、Zexin Yu、Lijin Xu、Qinghua Fan、Patrick J. Walsh
DOI:10.1002/adsc.202100596
日期:2021.8.13
Rh(I)-catalyzed C6-selective C−H arylation of 2-pyridones with inexpensive, readily available, safe and structurally diverse aryl carboxylic acids with the aid of a pyridine directing group is developed. This decarbonylative arylation protocol features an easy-to-handle catalytic system, and is amenable to diversely substituted 2-pyridones and aryl carboxylic acids. It allows access to a wide range
Access to Structurally Diverse Quinoline-Fused Heterocycles via Rhodium(III)-Catalyzed C–C/C–N Coupling of Bifunctional Substrates
作者:Songjie Yu、Yunyun Li、Xukai Zhou、He Wang、Lingheng Kong、Xingwei Li
DOI:10.1021/acs.orglett.6b01032
日期:2016.6.17
Rhodium(III)-catalyzed C–H activation of heteroarenes and functionalization with bifunctional substrates such as anthranils allows facile construction of quinoline-fused heterocycles under redox-neutral conditions. The couplings feature broad substrate scope and provide step-economical access to two classes of quinoline-fused condensed heterocycles.
A Rh-catalyzed chelation-assisted C6-selective C–Hactivation/alkylation of 2-pyridones with readily available alkyl carboxylic acids or anhydrides is introduced. The reaction proceeds via substrate decarbonylation. This approach merges C–H functionalization with readily available anhydrides, allowing for the efficient synthesis of various C6-alkylated 2-pyridones with good functional group tolerance