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.
(DPEPhos)Ni(mesityl)Br: An Air-Stable Pre-Catalyst for Challenging Suzuki–Miyaura Cross-Couplings Leading to Unsymmetrical Biheteroaryls
作者:Mark Stradiotto、Ryan Sawatzky
DOI:10.1055/s-0036-1591523
日期:2018.4
(DPEPhos)Ni(mesityl)Br (C1) as a pre-catalyst in the Suzuki–Miyaura cross-coupling of heteroaryl chlorides or bromides and heteroaryl boronic acids is reported. The use of C1 in this context allows for such reactions to be conducted under mild conditions (2 mol% Ni, 25 °C), including cross-couplings leading to unsymmetrical biheteroaryls. Successful transformations of this type involving problematic pyridinyl boronic
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.