A copper-catalyzed intramolecular amination occurs at the benzylic C–H of 2-methylbenzamides to deliver the corresponding isoindolinones of great interest in medicinal chemistry. The mild and abundant MnO2 works well as a terminal oxidant, and the reaction proceeds smoothly under potentially explosive organic peroxide-free conditions. Additionally, the directing-group-dependent divergent mechanisms
Isoindolone Synthesis via Palladium-Catalysed Intramolecular Amination of Benzylic C–H bonds
作者:Ming Zhang
DOI:10.3184/174751913x13801883437178
日期:2013.10
A new method for the construction of isoindolones is presented in this paper. Four 7-methyl-2-(8-quinolinyl)-2,3-dihydro-1H-isoindol-1-ones were synthesised from 2,6-dimethyl-N-(8-quinolinyl)benzamides via intramolecular direct amination of benzylic C-H bonds. This approach provides a convenient method affording structurally new isoindolones for medicinal chemistry research.
Isoindolone Synthesis via Intramolecular Coupling of Benzylic C-H Bonds with Amide N-H Bonds
作者:Ming Zhang、Tianbao Chen、Qinhua Liu
DOI:10.3987/com-14-12974
日期:——
Four 7-methyl-2-(8-quinolinyl)-2,3-dihydro-1H-isoindol-1-ones were synthesized from 2,6-dimethyl-N-(8-quinolinyl)benzamides with exellent yields using Pd(OAc)(2) as a catalyst, iodobenzene as an oxidant and AgOAc as an additive.
Chelation-Assisted Palladium-Catalyzed γ-Arylation of Aliphatic Carboxylic Acid Derivatives
A palladium(II)‐catalyzed protocol for the highly regioselective remote γ‐C–H arylation of aliphatic carboxylic acid has been disclosed. The 8‐aminoquinoline moiety as an intramolecular bidentate chelator was found to be suitable for this γ‐C–H arylation. Various aryl iodides successfully produced the regioselectively mono‐arylated products with negligible diarylation. Functional group tolerance and