A highly efficient meta-selective C−H arylation of aryl ethers has been realized by a new catalytic system based on palladium/norbornene (Pd/NBE) and an S,O-ligand. The reaction proceeds with a broad range of aryl ethers. For the first time, unsymmetrical meta-diarylation of aryl ethers was accomplished using a novel norbornene. The isolation of palladium intermediates provides insight to the mechanism
基于
钯/
降冰片烯 (Pd/NBE) 和 S,O-
配体的新型催化体系实现了芳基醚的高效间位选择性C−H 芳基化。该反应可使用多种芳基醚进行。首次使用新型
降冰片烯完成了芳基醚的不对称间二芳基化。
钯中间体的分离提供了对该机制的深入了解。