Catalytic Carbon−Carbon σ Bond Activation: An Intramolecular Carbo-Acylation Reaction with Acylquinolines
摘要:
Carbon-carbon sigma-bond activation is a contemporary challenge for organometallic chemistry and catalysis. Herein, we disclose a new alkene carboacylation reaction initiated by quinoline-directed, rhodium-catalyzed C-C sigma bond activation. The alkene carboacylation allows for the construction of all-carbon quaternary centers, with a broad substrate scope, providing access to carbocyclic and heterocyclic ring systems in good to excellent yields.
Rhodium-Catalyzed Acylation with Quinolinyl Ketones: Carbon−Carbon Single Bond Activation as the Turnover-Limiting Step of Catalysis
作者:Colin M. Rathbun、Jeffrey B. Johnson
DOI:10.1021/ja109686v
日期:2011.2.23
subject for the mechanistic study of carbon-carbonbond activation. Combined kinetic and NMR studies of this reaction allowed the identification of the catalytic resting state and determination of the rate law, (12)C/(13)C kinetic isotope effects, and activation parameters. These results have identified the activation of a ketone-arene carbon-carbonsinglebond as the turnover-limiting step of catalysis