Controlling First-Row Catalysts: Amination of Aryl and Heteroaryl Chlorides and Bromides with Primary Aliphatic Amines Catalyzed by a BINAP-Ligated Single-Component Ni(0) Complex
作者:Shaozhong Ge、Rebecca A. Green、John F. Hartwig
DOI:10.1021/ja411911s
日期:2014.1.29
Mechanistic studies support the catalytic cycle involving a Ni(0)/Ni(II) couple for this nickel-catalyzed amination and are inconsistent with a Ni(I) halide intermediate. Monitoring the reaction mixture by 31P NMR spectroscopy identified (BINAP)Ni(η2-NC-Ph) as the resting state of the catalyst in the amination of both arylchlorides and bromides. Kineticstudies showed that the amination of aryl chlorides
Titanium complexes supported by imidazo[1,5-a]pyridine-containing pyrrolyl ligand as catalysts for hydroamination and polymerization reactions, and as an antitumor reagent
The syntheses, structures, catalytic properties and antitumor activities of three titanium complexes supported by an imidazo[1,5-a]pyridine-containing pyrrolyl ligand are reported.
General and efficient palladium-catalyzed aminations of aryl chlorides
作者:Xiaohong Bei、Anil S. Guram、Howard W. Turner、W.Henry Weinberg
DOI:10.1016/s0040-4039(98)02597-0
日期:1999.2
Pd(dba)2/Ligand A catalyst efficiently catalyzes the aminations of a variety of arylchlorides with a variety of amines in high rates, selectivities, and isolated yields.
Catalyst ligands, catalytic metal complexes and processes using same
申请人:Symyx Technologies
公开号:US20020072632A1
公开(公告)日:2002-06-13
New ligands having a backbone comprised of NCCX can be combined with a metal or metal precursor compound or formed into a metal-ligand complex to catalyze a number of different chemical transformations, including polymerization.
Pd-catalyzed amination in a polar medium: rate enhancement, convenient product isolation, and tandem Suzuki cross-coupling
作者:Shaun R. Stauffer、Melissa A. Steinbeiser
DOI:10.1016/j.tetlet.2005.02.095
日期:2005.4
A catalytic system utilizing a polar medium for the Pd-catalyzed amination reaction is described. This system utilizes Pd[P(t-Bu)(3)](2) and a weak base and displays a modest rate enhancement compared to similar existing protocols. Significant functional group tolerance is observed in both amine and aryl halide, including carboxylates, carbamates, nitriles, amides, and esters. Product isolation after filtration and automated reverse-phase chromatography readily permits parallel synthetic approaches if desired. (c) 2005 Elsevier Ltd. All rights reserved.