Cu-Catalyzed Arylation of Phenols: Synthesis of Sterically Hindered and Heteroaryl Diaryl Ethers
作者:Debabrata Maiti、Stephen L. Buchwald
DOI:10.1021/jo9026935
日期:2010.3.5
Cu-catalyzed O-arylation of phenols with aryl iodides and bromides can be performed under mild condition in DMSO/K3PO4 with use of picolinic acid as the ligand for copper. This method tolerates a variety of functional groups and is effective in the synthesis of hindereddiaryl ethers and heteroaryl ethers.
铜催化苯酚与芳基碘化物和溴化物的 O-芳基化反应可以在温和条件下在 DMSO/K 3 PO 4 中进行,使用吡啶甲酸作为铜的配体。该方法耐受多种官能团,在受阻二芳基醚和杂芳基醚的合成中有效。
Ullmann diaryl ether synthesis catalyzed by copper (I)/pyridine-functionalized silane
作者:Baohua Zhang、Lanxiang Shi、Ruixia Guo、Sijie Liu
DOI:10.1080/10426507.2015.1119135
日期:2016.6.2
GRAPHICAL ABSTRACT ABSTRACT Ullmann-type diarylethersynthesis was performed under mild conditions in DMF/K2CO3 using a pyridine-functionalized silane as a ligand. The products were obtained in good yields. This method tolerates a variety of functional groups and is effective in the synthesis of hindered diarylethers and heteroaryl ethers.
The intramolecular C–H/C–H coupling of 3-aryloxythiophenes and 3-aryloxybenzo[b]thiophenes has been found to occur effectively in the presence of Pd(TFA)2 and AgOAc as catalyst and oxidant, respect...