Mechanisms and models for copper mediated nucleophilic aromatic substitution. 2. Single catalytic species from three different oxidation states of copper in an Ullmann synthesis of triarylamines
Heterogeneous Aromatic Amination of Aryl Halides with Arylamines in Water with PS-PEG Resin-Supported Palladium Complexes
作者:Yoshinori Hirai、Yasuhiro Uozumi
DOI:10.1002/asia.201000192
日期:——
Catalytic aromatic amination is achieved in water under heterogeneous conditions by the use of immobilized palladium complexes coordinated with the amphiphilic polystyrene‐poly(ethylene glycol) resin‐supported di(tert‐butyl)phosphine ligand. Aromatic amination of arylhalides with diphenylamine and N,N‐double arylation of anilines with bromobenzene were found to proceed in water with broad substrate
Clean synthesis of triarylamines: Buchwald–Hartwig reaction in water with amphiphilic resin-supported palladium complexes
作者:Yoshinori Hirai、Yasuhiro Uozumi
DOI:10.1039/b918424d
日期:——
Catalytic aromatic amination was achieved in water under heterogeneous conditions by the use of palladium complexes anchored to the amphiphilic PS-PEG resin with little palladium leaching to provide a green and clean (metal-uncontaminated) protocol for the preparation of triarylamines, including the optoelectronically active N,N,N',N'-tetraaryl-1,1'-biphenyl-4,4'-diamines (TPDs).
A copolymer for use in an electroluminescent device comprising a first repeat unit, a second repeat unit comprising a group having a general formula (I) and optionally, a third repeat unit comprising a group having a general formula (II) which may be substituted or unsubstituted where T is a trifluoromethyl substituted benzene; Ar, Ar′ and Ar″ each independently comprise a substituted or unsubstituted aryl or heteroaryl group and m is 1 or 2.
1
一种用于电致发光器件的共聚物,包括第一重复单元、第二重复单元和第三重复单元,第一重复单元包括通式(I)的基团,第二重复单元包括通式(II)的基团,通式(II)可以是取代或未取代的,其中 T 是三氟甲基取代的苯;Ar、Ar′和 Ar″ 各自独立地包括取代或未取代的芳基或杂芳基,m 是 1 或 2。
1
N-Arylation of aliphatic, aromatic and heteroaromatic amines catalyzed by copper bis(2,2,6,6-tetramethyl-3,5-heptanedionate)
作者:Nitin S. Nandurkar、Mayur J. Bhanushali、Malhari D. Bhor、Bhalchandra M. Bhanage
DOI:10.1016/j.tetlet.2007.07.009
日期:2007.9
Copper bis(2,2,6,6-tetramethyl-3,5-heptanedionate) was found to be an efficient catalyst for N-arylation of aliphatic, aromatic and heteroaromatic amines with aryl iodides/bromides under mild conditions. The system tolerated a variety of hindered and functionalized amines/aryl halides and the desired N-aryl amines were obtained in good to excellent yields. (C) 2007 Elsevier Ltd. All rights reserved.