Preparation of fluorinated biaryls through direct palladium-catalyzed coupling of polyfluoroarenes with aryltrifluoroborates
摘要:
The direct palladium-catalyzed coupling of polyfluoroarenes with aryltrifluoroborates gave the desired products of fluorinated biaryls in good to excellent yields. A diverse set of important functional groups including methoxy, aldehyde, ester, nitro and halide can be well tolerated in the protocol. (c) 2013 Elsevier B.V. All rights reserved.
Assessing the Cooperating Ability of 6‐Hydroxypicolinic Acid and Pyridyl‐Amide Ligands in Palladium‐Mediated C–H Activation
作者:Cintya Pinilla、Ana Carmen Albéniz
DOI:10.1002/ejic.202400076
日期:——
and pyridyl amides to act as cooperating ligands in the C−H activation of arenes has been tested by independent experiments. Isolated complexes [Pd(κ2-ligand)(C6F5)py]x− (x=1, 0; ligand=6-oxidopicolinate, pyridyl-amide) were decomposed in arenes leading to the C−H activation of the latter and C6F5-arene coupling products in different amounts which allows to rank the ability of both ligands.
6-羟基吡啶甲酸和吡啶酰胺在芳烃的 C−H 活化中作为协同配体的能力已通过独立实验进行了测试。分离的复合物 [Pd(κ 2 -配体)(C 6 F 5 )py] x− (x=1, 0;配体=6-氧化吡啶甲酸酯,吡啶基酰胺)在芳烃中分解,导致后者的 C−H 活化和不同量的 C 6 F 5 -芳烃偶联产物,这使得对两个配体的能力进行排名。
Pd-Catalyzed Direct Arylation of Polyfluoroarenes on Water under Mild Conditions Using PPh<sub>3</sub> Ligand
作者:Fei Chen、Qiao-Qiao Min、Xingang Zhang
DOI:10.1021/jo300036d
日期:2012.3.16
We report a Pd-catalyzed direct arylation of polyfluoroarenes with aryl iodides. The advantages of this reaction are its high reaction efficiency, excellent functional group compatibility, mild reaction conditions (70 degrees C), inexpensive PPh3 ligand, and use of pure water as reaction medium. The usefulness of this reaction has also been demonstrated by rapid preparation of highly functionalized polyfluoroarenes via iterative Pd-catalyzed C-H bond functionalization.
Preparation of fluorinated biaryls through direct palladium-catalyzed coupling of polyfluoroarenes with aryltrifluoroborates
The direct palladium-catalyzed coupling of polyfluoroarenes with aryltrifluoroborates gave the desired products of fluorinated biaryls in good to excellent yields. A diverse set of important functional groups including methoxy, aldehyde, ester, nitro and halide can be well tolerated in the protocol. (c) 2013 Elsevier B.V. All rights reserved.