Synthesis, Characterization, and Reactivity of Palladium Fluoroenolate Complexes
作者:Sophie I. Arlow、John F. Hartwig
DOI:10.1021/jacs.7b09949
日期:2017.11.15
by palladium complexes have been reported, but palladium fluoroenolate intermediates relevant to such reactions have not been isolated or even detected previously. We report the synthesis, structural characterization, and reactivity of a series of C-bound arylpalladium fluoroenolate complexes ligated by monophosphines and bisphosphines. DPPF-ligated arylpalladium fluoroenolate complexes (DPPF = 1,1
已经报道了由钯配合物催化的芳基与α-氟代羰基化合物的交叉偶联反应,但与这种反应相关的氟烯醇钯中间体以前没有被分离甚至检测到。我们报告了一系列由单膦和双膦连接的 C 结合芳基钯氟烯醇盐配合物的合成、结构表征和反应性。源自单氟酯、二氟酯、二氟酰胺和二氟乙腈的 DPPF 配位芳基氟烯醇化钯复合物 (DPPF = 1,1-双(二苯基膦)-二茂铁) 以高产率进行还原消除。与含有更多吸电子氟烯醇基团和较短 Pd-C(enolate) 键的配合物相比,含有较少吸电子氟烯醇基团和较长 Pd-C(enolate) 键的配合物的还原消除速度更快。这些 C 结合的氟烯醇化物配合物的还原消除速率明显快于类似的三氟甲基配合物的还原消除速率。
Preparation and coupling of some .alpha.-haloperfluoromethyl-s-triazines
作者:George A. Grindahl、W. X. Bajzer、Ogden R. Pierce
DOI:10.1021/jo01278a020
日期:1967.3
Homolytic addition of functionally substituted perfluoroalkyl iodides
作者:L. N. Kiseleva、V. I. Dostovalova、F. K. Velichko、V. F. Cherstkov、S. R. Sterlin、G. I. Savicheva、M. A. Kurykin、L. C. German
DOI:10.1007/bf00962513
日期:1988.9
New and Efficient Syntheses of α-Iodo-α,α-Difluoro- and β-Iodo-α,α,β,β-Tetrafluorocarboxylic Acid Derivatives as Useful Building Blocks for Making Functional Fluoro Compounds
作者:Ming-H. Hung、Lu Long、Zhen-Yu Yang
DOI:10.1021/jo035170j
日期:2004.1.1
converted into various α-iodo-perfluorocarboxylic acid derivatives or telomerized with tetrafluoroethylene to I(CF2CF2)nOSO2Cl. Ring-opening reaction of perfluoroalkoxypentafluorocyclopropane with iodine at 240 °C produced ICF2CF2COF, which was quenched by alcohol, water, or NH3 to give β-iodo-α,α,β,β-tetrafluorocarboxylic acid derivatives. These functional fluorinated iodides can be used as building blocks
全氟烯烃与I-Cl和ClSO 3 H在温和的条件下反应,得到R F CFICF 2 OSO 2 Cl,可以很容易地将其转化为各种α-碘-全氟羧酸衍生物,也可以用四氟乙烯将其端粒化为I(CF 2 CF 2)n OSO 2 Cl。全氟烷氧基五氟环丙烷与碘在240°C下的开环反应生成ICF 2 CF 2 COF,将其用酒精,水或NH 3淬灭得到β-碘-α,α,β,β-四氟羧酸衍生物。这些功能性氟化碘化物可以用作制备选择性氟化化合物的结构单元。