CuI/Oxalamide Catalyzed Couplings of (Hetero)aryl Chlorides and Phenols for Diaryl Ether Formation
作者:Mengyang Fan、Wei Zhou、Yongwen Jiang、Dawei Ma
DOI:10.1002/anie.201601035
日期:2016.5.17
Couplings between (hetero)arylchlorides and phenols can be effectively promoted by CuI in combination with an N‐aryl‐N′‐alkyl‐substituted oxalamide ligand to proceed smoothly at 120 °C. For this process, N‐aryl‐N′‐alkyl‐substituted oxalamides are more effective ligands than bis(N‐aryl)‐substituted oxalamides. A wide range of electron‐rich and electron‐poor aryl and heteroaryl chlorides gave the corresponding
Solvent-free palladium-catalyzed C–O cross-coupling of aryl bromides with phenols
作者:Sergey A. Rzhevskiy、Maxim A. Topchiy、Vasilii N. Bogachev、Lidiya I. Minaeva、Ilia R. Cherkashchenko、Konstantin V. Lavrov、Grigorii K. Sterligov、Mikhail S. Nechaev、Andrey F. Asachenko
DOI:10.1016/j.mencom.2021.04.042
日期:2021.5
A new solvent-free procedure for C–O cross-coupling between phenols and aryl bromides comprising of Pd2(dba)3/ButBrettPhos catalytic system is efficient for substrates bearing donor or acceptor, as well as bulky substituents.
Picolinamides as Effective Ligands for Copper-Catalysed Aryl Ether Formation: Structure-Activity Relationships, Substrate Scope and Mechanistic Investigations
作者:Carlo Sambiagio、Rachel H. Munday、Stephen P. Marsden、A. John Blacker、Patrick C. McGowan
DOI:10.1002/chem.201404275
日期:2014.12.22
picolinic acid amide derivatives as an effective family of bidentate ligands for copper‐catalysed arylether synthesis is reported. A fluorine‐substituted ligand gave good results in the synthesis of a wide range of arylethers. Even bulky phenols, known to be very challenging substrates, were shown to react with aryl iodides with excellent yields using these ligands. At the end of the reaction, the first
<i>N</i>,<i>N</i>-Dimethyl Glycine-Promoted Ullmann Coupling Reaction of Phenols and Aryl Halides
作者:Dawei Ma、Qian Cai
DOI:10.1021/ol0350947
日期:2003.10.1
[reaction: see text] Ullmann-type diaryl ether synthesis can be performed at 90 degrees C using either aryl iodides or aryl bromides as the substrates under the assistance of N,N-dimethylglycine.
Methenamine as an Efficient Ligand for Copper-catalyzed Coupling of Phenols with Aryl Halides
作者:Cunwei Qian、Qianshou Zong、Dong Fang
DOI:10.1002/cjoc.201100077
日期:2012.1
Employing methenamine as a new supporting ligand, the copper‐catalyzed coupling reactions of aryl bromides or aryl iodides with various phenols successfully proceeded in good yields under mild conditions. A series of diaryl ethers were obtained with excellent yields in the presence of K3PO4 and copper(I) salt.
利用甲基苯丙胺作为新的支持配体,芳烃溴化物或芳基碘化物与各种酚的铜催化偶联反应在温和条件下成功地以高收率进行。在K 3 PO 4和铜(I)盐存在下,以优异的收率获得了一系列二芳基醚。