Palladium-Catalyzed Arylation of Electron-Rich Heterocycles with Aryl Chlorides
作者:Hendrich A. Chiong、Olafs Daugulis
DOI:10.1021/ol0702324
日期:2007.4.1
[reaction: see text] Palladium-catalyzed C-H activation: cheap aryl chlorides can now be used for the arylation of a wide variety of electron-richheterocycles. The key to the success of this reaction is the use of a bulky, electron-rich phosphine ligand. No copper additives are needed.
USE OF ARYL CHLORIDES IN PALLADIUM-CATALYZED C-H BOND FUNCTIONALIZATION
申请人:Daugulis Olafs
公开号:US20090012293A1
公开(公告)日:2009-01-08
A one-step method for efficiently converting carbon-hydrogen bonds into carbon-carbon bonds using chloroarenes and palladium catalysts is disclosed. This method allows faster introduction of complex molecular entities, a process that would otherwise require many more steps. This invention is particularly relevant for the organic synthesis of complex molecules such as, but not limited to, pharmacophores.
Double C−H Activation: The Palladium-Catalyzed Direct C-Arylation of Xanthines with Arenes
作者:Chandi C. Malakar、Dietmar Schmidt、Jürgen Conrad、Uwe Beifuss
DOI:10.1021/ol200065s
日期:2011.3.18
The novel Pd-catalyzedC(sp2)−H/C(sp2)−H cross-coupling of unactivated xanthines with unactivated arenes utilizing a combination of Ag(I) and O2 as oxidants exclusively yields C-8 arylated xanthines in a single synthetic operation.