Mild Ullmann-Type Biaryl Ether Formation Reaction by Combination ofortho-Substituent and Ligand Effects
作者:Qian Cai、Benli Zou、Dawei Ma
DOI:10.1002/anie.200503538
日期:2006.2.13
CuBr/N,N-Dimethylglycine-Catalyzed Coupling Reaction of 2-Chlorotrifluoroacetanilides with Phenols at Mild Conditions
作者:Chao Hao、Yihua Zhang、Yongwen Jiang、Dawei Ma
DOI:10.1002/cjoc.201090279
日期:2010.9
The ortho‐substituent effect directed by the CF3CONH group exists in CuBr/N,N‐dimethylglycine‐catalyzed diaryl ether formation from o‐chlorotrifluoroacetanilides and phenols, leading to this coupling reaction proceeding at 80°C to afford a wide range of diaryl ethers. The halogen‐exchange also plays an important role in this transformation because adding potassium iodide is essential for complete conversion