was developed. The use of arenediazonium tosylates and corresponding boron compounds allows a conversion in neat water in the presence of commercially available Pd(OAc)2under mild conditions with tolerance to a wide range of functional groups. A procedure particularly useful for the synthesis of di-ortho-substituted biaryls was developed. A simple, convenient, and environment-friendly procedure for
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.
A General Pd-Catalyzed Decarboxylative Cross-Coupling Reaction between Aryl Carboxylic Acids: Synthesis of Biaryl Compounds
作者:Peng Hu、Yaping Shang、Weiping Su
DOI:10.1002/anie.201200153
日期:2012.6.11
Acid to acid: A general method has been developed for the synthesis of biaryl compounds through a decarboxylative cross‐coupling reaction between two different (hetero)aryl carboxylic acids (see scheme). The use of a PdII/PCy3 catalyst enables the cross‐coupling reaction of electronically different or electronically similar aryl carboxylic acids. This method is compatible with substrates having nitro
酸到酸:已开发出一种通过两种不同的(杂)芳基羧酸之间的脱羧交叉偶联反应来合成联芳基化合物的通用方法(请参见方案)。使用Pd II / PCy 3催化剂可实现电子不同或电子相似的芳基羧酸的交叉偶联反应。该方法与具有硝基,氰基,氟,氯,溴,三氟甲基和甲氧基取代基的底物相容。
Erdtman,H. et al., Acta Chemica Scandinavica (1947), 1961, vol. 15, p. 1761 - 1764