Palladium-Catalyzed C−F Activation of Polyfluoronitrobenzene Derivatives in Suzuki−Miyaura Coupling Reactions
作者:Matthew R. Cargill、Graham Sandford、Andrezj J. Tadeusiak、Dmitrii S. Yufit、Judith A. K. Howard、Pinar Kilickiran、Gabrielle Nelles
DOI:10.1021/jo100877j
日期:2010.9.3
substrates for palladium-catalyzed C−F bond arylation using readily available palladium catalysts under both conventional heating and microwave conditions. Arylation occurs ortho to the nitro group offering a synthetic route to polyfluorinated 2-arylnitrobenzene systems. The regiochemistry of the arylation reactions suggests that there is a significant directing interaction between the nitro group and the incoming
Highly Selective Pd-Catalyzed Direct C–F Bond Arylation of Polyfluoroarenes
作者:Zhi-Ji Luo、Hai-Yang Zhao、Xingang Zhang
DOI:10.1021/acs.orglett.8b00692
日期:2018.5.4
A directing-group-free palladium-catalyzeddirectarylation of simple polyfluoroarenes with arylboronic acids through selective C–F bond activation is described. The combination of Pd(OAc)2 with BrettPhos was identified as an efficient catalytic system to promote the reaction with high regioselectivity and broad substrate scope. Preliminary mechanistic studies reveal that the oxidative addition of