with various substituted benzoic acids is developed. The reaction is compatible with both electron-rich and electron-poor benzoic acids. It can also be extended to the synthesis of polyfluoro-substituted biaryls using polyfluorobenzenes as the starting materials.
Synthesis of Biaryls by Pd-Catalyzed Decarboxylative Homo- and Heterocoupling of Substituted Benzoic Acids
作者:Kai Xie、Sizhuo Wang、Zhiyong Yang、Jidan Liu、Anwei Wang、Xiujian Li、Ze Tan、Can-Cheng Guo、Wei Deng
DOI:10.1002/ejoc.201100913
日期:2011.10
base, symmetrical and unsymmetrical biaryls can be readily synthesized through the Pd-catalyzed decarboxylative homo- and heterocoupling of substituted benzoic acids. The reaction gave the desired products in 40–90 % yield and is compatible with 2-nitro-, 2-methoxy-, 2-fluoro-, and 2-chloro-substituted benzoic acids.
Pd/PR<sub>3</sub>-Catalyzed Cross-Coupling of Aromatic Carboxylic Acids with Electron-Deficient Polyfluoroarenes via Combination of Decarboxylation with sp<sup>2</sup> C−H Cleavage
作者:Huaiqing Zhao、Ye Wei、Jing Xu、Jian Kan、Weiping Su、Maochun Hong
DOI:10.1021/jo102175f
日期:2011.2.4
broad range of aromatic carboxylic acids, including heteroaromatic carboxylic acids, efficiently underwent decarboxylative coupling with an array of polyfluoroarenes in the presence of stoichiometric amount of silver salts to generate biaryls. Silver salts were adjusted to the reactivity of aromatic carboxylic acids to efficiently suppress the protodecarboxylation and therefore improve decarboxylative