Formal Direct Cross‐Coupling of Phenols with Amines
作者:Zhengwang Chen、Huiying Zeng、Simon A. Girard、Feng Wang、Ning Chen、Chao‐Jun Li
DOI:10.1002/anie.201506751
日期:2015.11.23
The transition‐metal‐catalyzedamination of arylhalides has been the most powerful method for the formation of arylamines over the past decades. Phenols are regarded as ideal alternatives to arylhalides as coupling partners in cross‐couplings. An efficient palladium‐catalyzed formal cross‐coupling of phenols with various amines and anilines has now been developed. A variety of substituted phenols
Palladium-Catalyzed Amination of Aryl and Heteroaryl Tosylates at Room Temperature
作者:Tokutaro Ogata、John F. Hartwig
DOI:10.1021/ja805810p
日期:2008.10.22
Mild palladium-catalyzed aminations of aryltosylates and the first aminations of heteroaryltosylates are described. In the presence of the combination of L2Pd(0) (L = P(o-tol)3) and the hindered Josiphos ligand CyPF-t-Bu, a variety of primary alkylamines and arylamines react with both aryl and heteroaryltosylates at room temperature to form the corresponding secondary arylamines in high yields with
<i>N</i>-Alkylation of Amines by C1–C10 Aliphatic Alcohols Using A Well-Defined Ru(II)-Catalyst. A Metal–Ligand Cooperative Approach
作者:Amit Kumar Guin、Subhasree Pal、Subhajit Chakraborty、Santana Chakraborty、Nanda D. Paul
DOI:10.1021/acs.joc.3c00313
日期:2023.5.5
A Ru(II)-catalyzed efficient and selective N-alkylation of amines by C1–C10 aliphatic alcohols is reported. The catalyst [Ru(L1a)(PPh3)Cl2] (1a) bearing a tridentate redox-active azo-aromatic pincer, 2-((4-chlorophenyl)diazenyl)-1,10-phenanthroline (L1a) is air-stable, easy to prepare, and showed wide functional group tolerance requiring only 1.0 mol % (for N-methylation and N-ethylation) and 0.1 mol
(DiMeIHept<sup>Cl</sup>)Pd: A Low-Load Catalyst for Solvent-Free (Melt) Amination
作者:Volodymyr Semeniuchenko、Sepideh Sharif、Jonathan Day、Nalin Chandrasoma、William J. Pietro、Jeffrey Manthorpe、Wilfried M. Braje、Michael G. Organ
DOI:10.1021/acs.joc.1c01057
日期:2021.8.6
(DiMeIHeptCl)Pd, a hyper-branched N-aryl Pd NHC catalyst, has been shown to be efficient at performing amine arylation reactions in solvent-free (“melt”) conditions. The highly lipophilic environment of the alkyl chains flanking the Pd center serves as lubricant to allow the complex to navigate through the paste-like environment of these mixtures. The protocol can be used on a multi-gram scale to make