Bimetallic Cu/Pd Catalysts with Bridging Aminopyrimidinyl Phosphines for Decarboxylative Cross-Coupling Reactions at Moderate Temperature
作者:Dagmar Hackenberger、Bingrui Song、Matthias F. Grünberg、Saeid Farsadpour、Fabian Menges、Harald Kelm、Cedric Groß、Timm Wolff、Gereon Niedner-Schatteburg、Werner R. Thiel、Lukas J. Gooßen
DOI:10.1002/cctc.201500769
日期:2015.11
catalyst system is presented that enables the decarboxylative cross‐coupling of triflates with carboxylate salts at only 100 °C, which is 70 °C lower than with previous Cu/Pd‐based systems. The new protocol allows the coupling of a broad range of aryl triflates with various substituted 2‐nitrobenzoates in good to excellent yields. The key feature of the catalyst system is a bidentate P,N‐ligand designed
Palladium-catalyzed cross-coupling of aryl fluorides with N-tosylhydrazones via C–F bond activation
作者:Haiqing Luo、Guojiao Wu、Shuai Xu、Kang Wang、Chaoqiang Wu、Yan Zhang、Jianbo Wang
DOI:10.1039/c5cc05035a
日期:——
A palladium-catalyzed cross-coupling reaction of electron-deficient aryl fluorides with aryl N-tosylhydrazones, which involves C–F bond activation and migratory insertion of palladium carbene, has been developed.
Arylalkene Synthesis via Decarboxylative Cross-Coupling of Alkenyl Halides
作者:Jie Tang、Lukas J. Gooßen
DOI:10.1021/ol500876x
日期:2014.5.16
A bimetallic catalyst system generated from readily available palladium(II) and copper(I) salts, 1,10-phenanthroline and tri-1-naphthylphosphine was found to efficiently mediate the decarboxylative cross-coupling of alkenyl bromides and chlorides with aromatic carboxylates. It allows the regiospecific synthesis of a broad range of aryl- and heteroarylalkenes in high yields.