An ortho‐selective CF bond borylation betweenN‐heterocycle‐substituted polyfluoroarenes and Bpin‐Bpin with simple and commercially available [Rh(cod)2]BF4 as a catalyst is now reported. The reaction proceeds under mild reaction conditions with high efficiency and broad substrate scope, even toward monofluoroarene, thus providing a facile access to a wide range of borylated fluoroarenes that are useful
邻选择性Ç 的N-杂环取代的polyfluoroarenes和BPIN-BPIN用简单的和可商购的间F键硼化的[Rh(COD)2 ] BF 4现在报告作为催化剂。该反应在温和的反应条件下以高效率和宽泛的底物范围进行,甚至朝单氟芳烃进行,因此可以轻松地获得各种对光电子材料有用的硼化氟代芳烃。初步的机理研究表明,通过关键中间体氢化铑(III)络合物[(H)Rh III L n(Bpin)]的Rh III / V催化循环可能参与了反应。
Copper- and Phosphine-Ligand-Free Palladium-Catalyzed Direct Allylation of Electron-Deficient Polyfluoroarenes with Allylic Chlorides
作者:Yan-Bo Yu、Shilu Fan、Xingang Zhang
DOI:10.1002/chem.201202824
日期:2012.11.12
copper‐ and phosphine‐ligand‐free Pd‐catalyzed directallylation of electron‐deficient polyfluoroarenes with allylicchlorides and the reaction mechanism are described (see scheme). The simple catalytic system, broad substrate scope, and excellent functional‐group compatibility of this protocol provides a useful and facile access to allylated polyfluoroarenes.
PdF: A simple catalytic system, broad substrate scope, and high versatility provide a useful and facileaccess to partiallyfluorinatedaromatics (see scheme). Tuning the reaction conditions enables a diverse range of product structures to be prepared.
Pd-Catalyzed Direct Cross-Coupling of Electron-Deficient Polyfluoroarenes with Heteroaromatic Tosylates
作者:Shilu Fan、Jie Yang、Xingang Zhang
DOI:10.1021/ol201706t
日期:2011.8.19
We report a Pd-catalyzed direct cross-coupling of electron-deficientpolyfluoroarenes with heteroaromatic tosylates. The notable features of this reaction are its high reaction efficiency, excellent chemoselectivity, operational simplicity, and mild reaction conditions. We have applied this protocol to prepare the semiconducting materials in a highly efficient manner.