Ligand-Determined Single, Double, and Triple C–H Arylation of Aryl Phosphines at Will
作者:Zhiqian Yu、Qianhui Liu、Yudong Yang、Jingsong You
DOI:10.1021/acscatal.2c03994
日期:2022.10.7
aryl phosphines would provide a foundation for the modularsynthesis of electronically and stericallytunable biaryl phosphines. However, this central task is challenging owing to the unfavorable four-membered cyclometalation and high tendency to undergo further interannular arylation. Herein phenolic compounds have been found to be effective ligands to determine single, double, or triple C–H arylation
An Efficient Method for Sterically Demanding Suzuki-Miyaura Coupling Reactions
作者:Qing Zhao、Chengxi Li、Chris H. Senanayake、Wenjun Tang
DOI:10.1002/chem.201203898
日期:2013.2.11
An efficientmethod for sterically demanding Suzuki–Miyauracoupling reactions has been developed with two catalysts, Pd/BI‐DIME (see scheme) and Pd/phenanthrene‐based ligand. The Pd/BI‐DIME catalyst facilitates the syntheses of extremely hindered biaryls bearing ortho‐isopropyl substituents. The other catalyst is efficient for the synthesis of functionalized tetra‐ortho‐substituted biaryls at low