Pd-Catalyzed Direct Cross-Coupling of Electron-Deficient Polyfluoroarenes with Heteroaromatic Tosylates
作者:Shilu Fan、Jie Yang、Xingang Zhang
DOI:10.1021/ol201706t
日期:2011.8.19
We report a Pd-catalyzed direct cross-coupling of electron-deficientpolyfluoroarenes with heteroaromatic tosylates. The notable features of this reaction are its high reaction efficiency, excellent chemoselectivity, operational simplicity, and mild reaction conditions. We have applied this protocol to prepare the semiconducting materials in a highly efficient manner.
Direct Pd-catalyzed benzylation of highly electron-deficient perfluoroarenes
作者:Shilu Fan、Chun-Yang He、Xingang Zhang
DOI:10.1039/c0cc00598c
日期:——
An efficient and practical method to a wide range of perfluorinated unsymmetrical diarylmethanes with good to excellent yields and high regioselectivities has been developed by Pd-catalyzed direct benzylation of highly electron-deficient perfluoroarenes; excellent compatibility of functional groups has also been established.
carbon–carbon bond-forming reaction via deaminative/decarboxylative cross-coupling of organoammonium salts with carboxylicacids was developed. Under the reaction conditions, polyfluoroaromatic carboxylicacids, propiolic acids and α-cyano benzyl carboxylicacid reacted smoothly with benzyl ammonium salts to produce the corresponding carbon–carbon coupling products in good-to-excellent yields.
A methyl(phenyl)sulfane-promoted direct olefination of polyfluoroarenes catalyzed by palladium has been reported. With use of this new thioether ligand, a high reaction efficiency and excellent E/Z ratio of desired olefinated polyfluoroarenes were obtained. This represents a first example of thioether promoted oxidative Heck reaction.