Efficient Iron/Copper-Cocatalyzed O-Arylation of Phenols with Bromoarenes
作者:Songlin Zhang、Xiaoyan Liu
DOI:10.1055/s-0030-1259291
日期:2011.1
Low catalytic amount CuI and Fe(acac)3 were found to effectively promote the C-O cross-coupling reaction in the presence of K2CO3 as the base. A serious of diaryl ethers with different substitutents can be synthesized in good to excellent yields. This efficient and economic method is attractive for applications on an industrial scale.
Oxalohydrazide Ligands for Copper‐Catalyzed C−O Coupling Reactions with High Turnover Numbers
作者:Ritwika Ray、John F. Hartwig
DOI:10.1002/anie.202015654
日期:2021.4.6
long‐lived copper catalysts for couplings that form the C−O bonds in biaryl ethers. These Cu‐catalyzed coupling of phenols with aryl bromides occurred with turnovers up to 8000, a value which is nearly two orders of magnitude higher than those of prior couplings to form biaryl ethers and nearly an order of magnitude higher than those of any prior copper‐catalyzed coupling of aryl bromides and chlorides
CuSO4/N-(9H-carbazol-9-yl)picolinamide-Catalyzed C–O Coupling of (Hetero)Aryl Chlorides with Phenols on Water
作者:Peng Hong、Xinhai Zhu、Fu Chen、Manna Huang、Yiqian Wan
DOI:10.1021/acs.orglett.4c02620
日期:2024.8.30
A Cu-catalyzed C–O coupling of (hetero)arylchlorides with phenols at 120 °C on water was developed with a designed ligand, N-(9H-carbazol-9-yl)picolinamide (L2). This method features a good substrate scope (both electron-donating and electron-withdrawing), low catalyst/ligand loadings (down to 1 mol %), and excellent scalability and practicability.
使用设计的配体N -(9 H -咔唑-9-基)吡啶酰胺 ( L2 ),在 120 °C 的水中开发了(杂)芳基氯与苯酚的 Cu 催化 C-O 偶联。该方法具有良好的底物范围(供电子和吸电子)、低催化剂/配体负载量(低至1 mol%)以及优异的可扩展性和实用性。