Exploration of the Mechanism of Platinum(II)-Catalyzed C–F Activation: Characterization and Reactivity of Platinum(IV) Fluoroaryl Complexes Relevant to Catalysis
作者:Tongen Wang、Lauren Keyes、Brian O. Patrick、Jennifer A. Love
DOI:10.1021/om2007562
日期:2012.2.27
A series of Pt(IV) complexes relevant to catalytic C–Factivation have been prepared and structurally characterized. PtIV–F complexes, formed by C–Factivation, underwent transmetalation with Me2Zn to generate Me3PtIV fluoroaryl complexes. In all cases, the Me3PtIV complex underwent reductive elimination to generate methylated organic products. The reactivity of both PtIV–F and Me3PtIV fluoroaryl complexes
一系列与催化C-F活化有关的Pt(IV)配合物已经制备并进行了结构表征。由CF活化形成的Pt IV -F络合物与Me 2 Zn进行金属转移,生成Me 3 Pt IV氟芳基络合物。在所有情况下,Me 3 Pt IV络合物都经过还原消除,生成甲基化的有机产物。Pt IV –F和Me 3 Pt IV氟芳基配合物的反应性都受到环金属化氟代芳基配体的电子性质的强烈影响。
Nickel-Catalyzed Csp<sup>2</sup>Csp<sup>3</sup>Bond Formation by CarbonFluorine Activation
作者:Alex D. Sun、Kaylyn Leung、Anita D. Restivo、Nicole A. LaBerge、Harumi Takasaki、Jennifer A. Love
DOI:10.1002/chem.201303809
日期:2014.3.10
method for Csp2Csp3 bond formation through CF activation. The process uses an inexpensive nickel complex with either diorganozinc or alkylzinc halide reagents, including those with β‐hydrogen atoms. A variety of fluorine substitution patterns and functional groups can be readily incorporated. Sequential reactions involving different precatalysts and coupling partners permit the synthesis of densely
Insight into the Mechanism of Platinum-Catalyzed Cross-Coupling of Polyfluoroaryl Imines
作者:Tongen Wang、Jennifer A. Love
DOI:10.1021/om800247p
日期:2008.7.1
of Pt-catalyzed methylation of polyfluorinated arenes as a means to generate partially fluorinated aromatic building blocks. The reaction is selective for cleavage of C−F bonds ortho to an imine substituent and allows for preferential cleavage of C−F bonds in the presence of considerably weaker bonds (e.g., C−Br). We report herein the proposed mechanism for this reaction. Initial C−Factivation generates
Nickel-Catalyzed Selective Defluorination to Generate Partially Fluorinated Biaryls
作者:Alex D. Sun、Jennifer A. Love
DOI:10.1021/ol200860t
日期:2011.5.20
A Ni-catalyzed, chemoselective cross-coupling reaction of polyfluoroarenes under mild reaction conditions is reported. A variety of fluorine-containing blaryls are synthesized in good-to-excellent yields. A wide range of substitution patterns and functional groups are tolerated.
Pt(II)Cl2(DMSO)2-catalyzed cross-coupling of polyfluoroaryl imines
作者:Alex D. Sun、Jennifer A. Love
DOI:10.1016/j.jfluchem.2010.06.018
日期:2010.11
PtCl2(DMSO)(2) has been identified as a readily accessible and effective C-F activation precatalyst We report herein the study of reaction optimization and substrate scope A comparison is made with previously reported [Pt2Me4(SMe2)(2)] and PtCl2(SMe2)(2) precatalysts (C) 2010 Elsevier B V All rights reserved