Spatially isolated palladium in porous organic polymers by direct knitting for versatile organic transformations
作者:Xinbo Wang、Shixiong Min、Swapan K. Das、Wei Fan、Kuo-Wei Huang、Zhiping Lai
DOI:10.1016/j.jcat.2017.08.030
日期:2017.11
Electro-beam induced Pd atom crystallization was observed for the first time in organic polymer and revealed the ultrafine dispersion of palladium atoms. Challenging types of Suzuki-Miyaura couplings, reductive coupling of aryl halides and oxidative coupling of arylboronic acid were successively catalyzed by PPPd in aqueousmedia. Also catalytically selective CH functionalization reactions were achieved
A Highly Selective Catalytic Method for the Oxidative Functionalization of C−H Bonds
作者:Allison R. Dick、Kami L. Hull、Melanie S. Sanford
DOI:10.1021/ja031543m
日期:2004.3.3
This communication describes a new and highly practical Pd(II)-catalyzed method for the regio- and chemoselective oxidative functionalization of arenes and alkanes. Carbon-hydrogen bonds of substrates that contain a variety of directing groups (e.g., pyridine, azobenzene, pyrazole, and imine derivatives) are selectively transformed into esters, ethers, and aryl-halides under mild conditions. The scope
Bimetallic Reductive Elimination from Dinuclear Pd(III) Complexes
作者:David C. Powers、Diego Benitez、Ekaterina Tkatchouk、William A. Goddard、Tobias Ritter
DOI:10.1021/ja1036644
日期:2010.10.13
C-halogen reductiveelimination reactions from dinuclear Pd(III) complexes and implicated dinuclear intermediates in Pd(OAc)(2)-catalyzed C-H oxidation chemistry. Herein, we report results of a thorough experimental and theoretical investigation of the mechanism of reductiveeliminationfrom such dinuclear Pd(III) complexes, which establish the role of each metal during reductiveelimination. Our results
The first solid-supported directed aromatic C–Hactivation/acetoxylation has been successfully developed by using palladium nanoparticles supported on graphene oxide (PdNPs/GO) as a catalyst. The practicability of this method is demonstrated by simple preparation of catalyst, high catalytic efficiency, wide functional group tolerance, and easy scale up of the reaction. A hot filtration test and Hg(0)
Ligand Control in Selective C-H Oxidative Functionalization Using Pd-PEPPSI-Type Complexes
作者:Ekaterina Bolbat、Ola F. Wendt
DOI:10.1002/ejoc.201600322
日期:2016.7
To achieve high selectivity in directed C–H activation, an NHC ligand was introduced to a palladium catalyst. A range of Pd-PEPPSI complexes were applied in the direct acetoxylation of 2-phenylpyridine. The best catalyst was found to be the one based on a diisopropylphenyl-substituted NHC ligand, and this was successfully used for the functionalization of sp2as well as more challenging sp3bonds for