[(2-mesitylindenyl)dicyclohexyl-phosphine]PdCl2 (2) have been synthesized and fully characterized by NMR and elemental analysis, as well as by X-ray crystallography for 2. A Highly active catalyst system derived from a palladium precatalyst and bulky 2-mesitylindenyl phosphine ligand (1) for the Buchwald–Hartwig amination reaction of arylhalides with primary and secondaryamines has been developed. This method
Buchwald-Hartwig Amination of (Hetero)aryl Chlorides by Employing Mor-DalPhos under Aqueous and Solvent-Free Conditions
作者:Bennett J. Tardiff、Mark Stradiotto
DOI:10.1002/ejoc.201200510
日期:2012.7
catalyst system in the Buchwald–Hartwigamination of (hetero)arylchlorides with primary or secondary amines conducted either underaqueousconditions without the use of co-solvents and/or surfactants or undersolvent-freeconditions (52 examples). We have established that reactions of this type can be conducted without the rigorous exclusion of air, and in the case of the solvent-free reactions, we have
我们报告了 [Pd(cinnamyl)Cl]2/Mor-DalPhos 催化剂体系在(杂)芳基氯化物与伯胺或仲胺的 Buchwald-Hartwig 胺化中的应用,该胺化反应在水性条件下进行,不使用共溶剂和/或表面活性剂或在无溶剂条件下(52 个例子)。We have established that reactions of this type can be conducted without the rigorous exclusion of air, and in the case of the solvent-free reactions, we have demonstrated that appropriately selected liquid and solid reagents can be employed successfully.
Selective Monoarylation of Primary Amines Using the Pd-PEPPSI-IPent<sup>Cl</sup>Precatalyst
作者:Sepideh Sharif、Richard P. Rucker、Nalin Chandrasoma、David Mitchell、Michael J. Rodriguez、Robert D. J. Froese、Michael G. Organ
DOI:10.1002/anie.201502822
日期:2015.8.10
A single set of reaction conditions for the palladium‐catalyzed amination of a wide variety of (hetero)aryl halides using primaryalkyl amines has been developed. By combining the exceptionally high reactivity of the Pd‐PEPPSI‐IPentCl catalyst (PEPPSI=pyridine enhanced precatalyst preparation, stabilization, and initiation) with the soluble and nonaggressive sodium salt of BHT (BHT=2,6‐di‐tert‐butyl‐hydroxytoluene)
New Phosphine-Functionalized NHC Ligands: Discovery of an Effective Catalyst for the Room-Temperature Amination of Aryl Chlorides with Primary and Secondary Amines
作者:Craig A. Wheaton、John-Paul J. Bow、Mark Stradiotto
DOI:10.1021/om400684n
日期:2013.11.11
dihydroimidazolium salts and demonstrate their utility as ligand precursors for Buchwald–Hartwig amination. Several examples of the general formula [1-Mes-3-2-(PR2)phenyl}imidazolidin-2-ylium][BF4] have been prepared, where phosphines of varying steric and electronic properties (R = Ph (9), Cy (10), 1-Ad (11)) are tethered by an o-phenylene group. The synthesis was not adaptable to N-aryl groups other than mesityl
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