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.
Rapid and Efficient Microwave-Assisted Amination of Electron-Rich Aryl Halides without a Transition-Metal Catalyst
作者:Lei Shi、Min Wang、Chun-An Fan、Fu-Min Zhang、Yong-Qiang Tu
DOI:10.1021/ol0353868
日期:2003.9.1
good to high yields undermicrowaveirradiation without a transition-metal catalyst. This reaction is a particularly powerful method for the coupling of electron-rich aryl halides with various amines. In some cases, the excellent regioselectivity could be observed, which facilitated the preparation of meta-substituted anilines from ortho- or para-substituted phenylhalides. In addition, a mechanism via
Nickel-Catalyzed Amination of Aryl 2-Pyridyl Ethers via Cleavage of the Carbon–Oxygen Bond
作者:Jing Li、Zhong-Xia Wang
DOI:10.1021/acs.orglett.7b01549
日期:2017.7.21
Reaction of aryl 2-pyridyl ethers with amines was carried out via Ni-catalyzed C–OPy bond cleavage, giving aniline derivatives in reasonable to excellent yields. Both electron-rich and electron-poor aryl 2-pyridyl ethers and a wide range of amines can be used in the transformation. The method provides a conversion way for the 2-pyridyloxy directing group in the C–H bond functionalization reactions
N-Heterocyclic Carbene–Palladium(II)–4,5-Dihydrooxazole Complexes: Synthesis and Catalytic Activity toward Amination of Aryl Chlorides
作者:Pei Huang、Yi-Xiang Wang、Hong-Fei Yu、Jian-Mei Lu
DOI:10.1021/om401028d
日期:2014.4.14
A series of novel N-heterocyclic carbene-palladium(II)-4,5-dihydrooxazole (NHC-Pd-II-Ox) complexes 3 were successfully synthesized from commercially available imidazolium salts 1, PdCl2, and 4,5-dihydrooxazoles 2 in a one-step process, and these complexes showed efficient catalytic activity toward the amination of aryl chlorides. Both secondary and primary amines were tolerated under the same reaction conditions. Under the optimal reaction conditions, the expected coupling products were obtained in moderate to high yields.
Modular <i>ipso</i>/<i>ortho</i> Difunctionalization of Aryl Bromides via Palladium/Norbornene Cooperative Catalysis
Palladium/norbornene (Pd/NBE) cooperative catalysis has emerged as a useful tool for preparing poly substituted arenes; however, its substrate scope has been largely restricted to aryl iodides. While aryl bromides are considered as standard substrates for Pd-catalyzed cross coupling reactions, their use in Pd/NBE catalysis remains elusive. Here we describe the development of general approaches for