Synthesis of Biaryls via Decarboxylative Pd-Catalyzed Cross-Coupling Reaction
作者:Jean-Michel Becht、Cédric Catala、Claude Le Drian、Alain Wagner
DOI:10.1021/ol070495y
日期:2007.4.1
and efficient route to biaryls via Pd-catalyzed decarboxylative cross-couplings of arene carboxylic acids and aryl iodides is reported. The PdCl2/AsPh3 catalytic system in the presence of Ag2CO3 in DMSO was found to be particularly efficient to perform this transformation. This reaction can be extended to the synthesis of various biaryls, including sterically hindered biaryls, with yields ranging from
Pd-catalysed decarboxylative Suzuki reactions and orthogonal Cu-based O-arylation of aromatic carboxylic acids
作者:Jian-Jun Dai、Jing-Hui Liu、Dong-Fen Luo、Lei Liu
DOI:10.1039/c0cc04104a
日期:——
Pd-catalysed decarboxylative Suzuki reactions and orthogonal Cu-based O-arylation reactions of aromatic carboxylic acids are reported. The new reactions may provide alternative routes for the synthesis of some biaryls and aromatic carboxylic esters.
Noncatalyzedcoupling reactions of aryllithiums and haloarenes proceed not only through the well-known aryne route but also, in some cases, through a novel addition-elimination pathway. Indeed, ortho-chloro- and ortho-bromomethoxyarenes lead selectively to the corresponding ortho-biaryls through a chelation-driven aromaticnucleophilicsubstitutionpathway. Contrary to common belief, such noncatalyzed
Palladium-catalyzed decarboxylative coupling of aromatic acids with aryl halides or unactivated arenes using microwave heating
作者:Adelina Voutchkova、Abigail Coplin、Nicholas E. Leadbeater、Robert H. Crabtree
DOI:10.1039/b813998a
日期:——
Microwave heating greatly accelerates Pd-catalyzed decarboxylativecoupling of aromatic acids and aryl iodides, and allows the coupling of benzoic acids with unactivated arenes.
微波加热极大地加速了钯催化的芳族酸和芳基碘化物的脱羧偶联,并使苯甲酸与未活化的芳烃偶联。
Ehrhart,G., Chemische Berichte, 1963, vol. 96, p. 2042 - 2046