Synthesis of Fluorene and Indenofluorene Compounds: Tandem Palladium-Catalyzed Suzuki Cross-Coupling and Cyclization
作者:Tao-Ping Liu、Chun-Hui Xing、Qiao-Sheng Hu
DOI:10.1002/anie.201000327
日期:2010.4.6
“Fluor” it: Palladium‐catalyzed tandemreactions, in which C(sp3)H bond activation is the key step (see scheme; DMA=dimethylacetamide), lead to substituted fluorenes and indenofluorenes through annulation in high yield and in one step. This method has potential for the preparation of other cyclic compounds, as well as substituted oligofluorenes and polyfluorenes.
General and highly active catalyst for mono and double Hiyama coupling reactions of unreactive aryl chlorides in water
作者:Dong-Hwan Lee、Ji-Young Jung、Myung-Jong Jin
DOI:10.1039/c0cc03535a
日期:——
A new beta-diketiminatophosphane Pd catalyst was found to be highly effective in the mono and double Hiyama couplingreactions of unactivated arylchlorides in water.
Halogen Selectivity in Nickel Salt-Catalyzed Cross-Coupling of Aryl Grignard Reagents with Bromochlorobenzenes a Novel Synthetic Method of Unsymmetrical Terphenyl
Abstract The reactions of aryl Grignardreagents with p- and m-bromochlorobenzenes catalyzed by non-ligated NiCl2 give selectively chlorobiphenyl derivatives. By the stepwise reaction, an unsymmetrical terphenyl was synthesized in a good yield.
Preferential Oxidative Addition in Palladium(0)-Catalyzed Suzuki Cross-Coupling Reactions of Dihaloarenes with Arylboronic Acids
作者:Cheng-Guo Dong、Qiao-Sheng Hu
DOI:10.1021/ja052547p
日期:2005.7.1
The study of Pd(0)-/t-Bu3P system as a powerful catalyst for the cross-coupling of n,m-dihaloarenes with 1 equiv of arylboronicacids is described. Our work demonstrated that the fate of the regenerated Pd(0) catalyst can be controlled when the appropriate ligand is employed. The results described here may lead to the development of new, efficient processes to conjugate polymers with controlled length