Silver-catalyzed decarboxylative acylfluorination of styrenes in aqueous media
作者:Hua Wang、Li-Na Guo、Xin-Hua Duan
DOI:10.1039/c4cc02800g
日期:——
A mild catalytic decarboxylative acylfluorination of styrenes with alpha-oxocarboxylic acids and Selectfluor is reported. This operationally simple and efficient method provides a fundamentally novel approach toward the synthesis of beta-fluorinated 3-aryl ketones with a wide range of substrate scope.
Metal-Catalyzed Benzylic Fluorination as a Synthetic Equivalent to 1,4-Conjugate Addition of Fluoride
作者:Steven Bloom、Seth Andrew Sharber、Maxwell Gargiulo Holl、James Levi Knippel、Thomas Lectka
DOI:10.1021/jo401796g
日期:2013.11.1
We explore in detail the iron-catalyzed benzylicfluorination of substrates containing aromatic rings and electron-withdrawing groups positioned β to one another, thus providing direct access to β-fluorinated adducts. This operationally convenient process can be thought of not only as a contribution to the timely problem of benzylicfluorination but also as a functional equivalent to a conjugate addition
Ag
<sup>II</sup>
‐Mediated Synthesis of β‐Fluoroketones by Oxidative Cyclopropanol Opening
作者:Yuanlin Deng、Nabeelah I. Kauser、Shahidul M. Islam、Justin T. Mohr
DOI:10.1002/ejoc.201700899
日期:2017.10.25
regioselective synthesis of β-fluorinated ketones via silver(II)-mediated ring opening is described. Commercially available AgF2 serves as both an oxidant and fluorine atom source. A variety of β-fluorinated ketones are efficiently prepared from tertiary cyclopropanol precursors, offering a straightforward approach for the introduction of a fluorine atom at a remote site. Selectivity is observed in
描述了通过银 (II) 介导的开环区域选择性合成 β-氟化酮。市售的 AgF2 可用作氧化剂和氟原子源。多种 β-氟化酮可从叔环丙醇前体有效制备,为在远程位置引入氟原子提供了一种直接的方法。在导致更多取代位点氟化的键断裂位点观察到选择性。建议自由基介导的顺序均裂 CC 键裂解和 CF 键形成。
Palladium-Catalyzed Electrooxidative Hydrofluorination of Aryl-Substituted Alkenes with a Nucleophilic Fluorine Source
Herein, we report an electrocatalytic hydrofluorination of aryl-substituted alkenes with a nucleophilic fluorine source. The merger of palladium catalysis with electrooxidation enables the transformation of various substrates ranging from styrenes to more challenging α,β-unsaturated carbonyl derivatives to the corresponding benzylic fluorides. This method can also be applied to the late-stage modification
Silver‐Catalyzed Decarboxylative Acylfluorination of Two Alkenes with Ketonic Acids
作者:Ren‐Xiang Liu、Wei Wang、Luo Yang
DOI:10.1002/adsc.202301256
日期:2024.4.9
A four-component acylative fluorination type radical-dual-difunctionalization of two different alkenes is developed, assisted by the interaction of silver catalyst and Selectflour. Various α-ketonic acids can be decarboxylated to form acyl radicals at 35 celsius centigrade, sequentially add to the electron-deficient and electron-rich alkenes to provide the benzyl fluorinated compounds containing diversified