Multiple Roles of the Pyrimidyl Group in the Rhodium‐Catalyzed Regioselective Synthesis and Functionalization of Indole‐3‐carboxylic Acid Esters
作者:Hui Jiang、Shang Gao、Jinyi Xu、Xiaoming Wu、Aijun Lin、Hequan Yao
DOI:10.1002/adsc.201500769
日期:2016.1.21
A regioselective synthesis of indole‐3‐carboxylic acid esters from anilines and diazo compounds has been realized by making use of the pyrimidyl group‐assisted rhodium‐catalyzed CH activation and CNbond formation. The reaction proceeds under mild conditions, exhibits good functional group tolerance and scalability. Reutilization of the pyrimidyl directing group in the resulting products provided
Nickel-catalyzed alkyne annulation by anilines: versatile indole synthesis by C–H/N–H functionalization
作者:Weifeng Song、Lutz Ackermann
DOI:10.1039/c3cc43915a
日期:——
Versatile nickel catalysts enabled the step-economical synthesis of decorated indoles through alkyne annulations with anilines bearing removable directing groups. The CâH/NâH activation strategy efficiently occurred in the absence of any metal oxidants and with excellent selectivities.
Ruthenium(<scp>ii</scp>)-catalyzed intermolecular synthesis of 2-arylindolines through C–H activation/oxidative cyclization cascade
作者:Manash Kumar Manna、Samir Kumar Bhunia、Ranjan Jana
DOI:10.1039/c7cc03053c
日期:——
Herein, we report a ruthenium-catalyzed 1,2-carboamination through C–H activation for the synthesis of 2-arylindolines from readily available, inexpensive, protected anilines and vinyl arenes. In earlier reports, indoline synthesis through C–H activation was demonstrated using sterically or electronically biased olefins suppressing β-hydride elimination. However, in the present protocol a ruthenium(II)-catalyzed
Rhodium-catalyzed C–H carboxymethylation of anilines with vinylene carbonate
作者:Qiong Liu、Zhaolong Ma、Jing Zhang、Xu-Qin Li
DOI:10.1039/d3ob00931a
日期:——
A rhodium-catalyzed synthesis of phenylacetate has been realized by direct C–H carboxymethylation of anilines bearing removable directing groups. The reaction occurred most efficiently in air, without any external base or oxidant. This methodology is expected to provide a facile and general access to various bioactive 2-amino aromatic acetic acid derivatives.