Synthesis of Biaryls and Aryl Ketones<i>via</i>Microwave-Assisted Decarboxylative Cross-Couplings
作者:Lukas J. Gooßen、Bettina Zimmermann、Christophe Linder、Nuria Rodríguez、Paul P. Lange、Jens Hartung
DOI:10.1002/adsc.200900337
日期:2009.11
A protocol for the microwave-assisted decarboxylative cross-couplings of carboxylic acid salts with aryl halides has been developed that allows the synthesis of various biaryls and aryl ketones in high yields. After careful adaptation of the bimetallic catalyst system and reaction conditions, these mechanistically complex transformations can now be performed within only five minutes in concentrated
Decarboxylative Etherification of Aromatic Carboxylic Acids
作者:Sukalyan Bhadra、Wojciech I. Dzik、Lukas J. Goossen
DOI:10.1021/ja304539j
日期:2012.6.20
Decarboxylative Chan-Evans-Lam-type couplings are presented as a new strategy for the regiospecific construction of diaryl and alkyl aryl ethers starting from easily available aromatic carboxylic acids. They allow converting various aromaticcarboxylatesalts into the corresponding aryl ethers by reaction with alkyl orthosilicates or aryl borates, under aerobic conditions in the presence of silver
Decarboxylative Cross-Coupling of Mesylates Catalyzed by Copper/Palladium Systems with Customized Imidazolyl Phosphine Ligands
作者:Bingrui Song、Thomas Knauber、Lukas J. Gooßen
DOI:10.1002/anie.201208025
日期:2013.3.4
The activation of the inert CO bonds in mesylates through the use of a new class of imidazolyl phosphines allows the decarboxylative coupling of aryl mesylates as well as polysubstituted alkenyl mesylates. Variation of the ligands leads to two complementary methods providing the corresponding biaryls and polysubstituted olefins in good yields.
Copper-Mediated Decarboxylative Coupling of Benzamides with <i>ortho</i>
-Nitrobenzoic Acids by Directed C−H Cleavage
作者:Kazutaka Takamatsu、Koji Hirano、Masahiro Miura
DOI:10.1002/anie.201701918
日期:2017.5.2
A copper‐mediated decarboxylative coupling of benzamides with ortho‐nitrobenzoic acids by 8‐aminoquinoline‐directed C−H cleavage has been developed. This reaction proceeds smoothly with only a copper salt to produce the corresponding biaryl compounds in good yields. The products can be easily transformed into various nitrogen‐containing heterocyclic compounds. Moreover, the combination of copper and
Decarboxylative <i>ipso</i>
Amination of Activated Benzoic Acids
作者:Martin Pichette Drapeau、Janet Bahri、Dominik Lichte、Lukas J. Gooßen
DOI:10.1002/anie.201812068
日期:2019.1.14
the ligand and either air or N‐methylmorpholine N‐oxide as the oxidant, electron‐deficient benzoic acids undergo oxidative decarboxylative coupling with unprotected amines. This operationally simple aniline synthesis is widely applicable with respect to the amine and gives good yields, even on multigram scale. The orthogonality of this reaction to other Pd‐catalyzedcross‐couplings allows the concise