Synthesis of hindered biphenyls by sequential non-transition metal-catalyzed reaction/palladium-catalyzed cross-couplings
作者:Ping He、Cheng-Guo Dong、Qiao-Sheng Hu
DOI:10.1016/j.tetlet.2008.01.101
日期:2008.3
The sequential reaction of 1,2-dihalobenzenes with aryllithiums followed by palladium-catalyzed cross-coupling reactions with Grignard reagents and arylboronic acids is described. This sequential reaction provides a convenient and expeditious access to tri-ortho substituted biaryl derivatives. (c) 2008 Elsevier Ltd. All rights reserved.
Synthesis of NHC Ligands Containing a Sulfoxide Moiety and Their Use in Cross-Coupling via a Au(I)/(III) Catalytic Cycle
作者:Takanori Shibata、Rikako Nagai、Sari Okazaki、Shun Nishibe、Mamoru Ito
DOI:10.1246/bcsj.20220013
日期:2022.4.15
We designed and synthesized a new series of NHCs with a sulfoxide moiety as a hemilabile ligand. We investigated the catalytic activities of Au(I)-NHC complexes in the strong oxidant-free cross-coupling of iodoarenes with 1,3,5-trimethoxybenzene. We ascertained that the sulfoxide moiety is critical for the Au(I)/(III) catalytic cycle.