Highly Active Well-Defined Palladium Precatalysts for the Efficient Amination of Aryl Chlorides
作者:Anthony Chartoire、Mathieu Lesieur、Alexandra M. Z. Slawin、Steven P. Nolan、Catherine S. J. Cazin
DOI:10.1021/om2005222
日期:2011.8.22
efficient preparation of [Pd(Amphos)(cinnamyl)Cl)] and [Pd(Amphos)(TFA)(κ2-N,C-C6H4-CH2NMe2)] (Amphos = 4-(di-tert-butylphosphino)-N,N-dimethylaniline and TFA = trifluoroacetate), two new well-defined palladium precatalysts, is reported. These complexes prove highly active in the Buchwald–Hartwig amination reaction, allowing the coupling of a wide range of (hetero)aryl chlorides, including unactivated
Synthesis and characterization of N-heterocyclic carbene-palladium(<scp>ii</scp>) chlorides-1-methylindazole and -1-methylpyrazole complexes and their catalytic activity toward C–N coupling of aryl chlorides
作者:Xiao-Yun Zhao、Quan Zhou、Jian-Mei Lu
DOI:10.1039/c6ra02556k
日期:——
series of N-heterocycliccarbene-palladium(II) chlorides-1-methylindazole and -1-methylpyrazole complexes was successfully synthesized and fully characterized by X-ray single crystal diffraction. In addition, initial investigations of their catalytic activity showed that they were efficientcatalysts in the C–N coupling of primary and secondary amines with aryl chlorides at low catalyst loadings.
Buchwald-Hartwig Aminations of Aryl Chlorides: A Practical Protocol Based on Commercially Available Pd(0)-NHC Catalysts
作者:L. J. Gooßen、A. Rivas-Nass、J. Paetzold、O. Briel、R. Karch、B. Kayser
DOI:10.1055/s-2004-837205
日期:——
naphthoquinone imidazolin-2-ylidene-palladium(0) complexes were found to be highlyactive one-component catalysts for the amination of aryl halides. With these very robust catalysts, the expensive bases Cs 2 CO 3 or NaOt-Bu traditionally used can be replaced by KOH. A convenient reaction protocol has been developed for the coupling of a wide range of arylchlorides with primary or secondary amines.
Synthesis of N-heterocyclic carbene–PdCl<sub>2</sub>–(iso)quinoline complexes and their application in arylamination at low catalyst loadings
作者:Feng Liu、Yi-Ran Zhu、Lu-Gan Song、Jian-Mei Lu
DOI:10.1039/c6ob00013d
日期:——
N-Heterocyclic carbene–PdCl2–(iso)quinoline complexes were synthesized and they showed efficient catalytic activity in the C–N coupling of aryl chlorides.