190198-12-0Relevant academic research and scientific papers
Molecular Engineering of Iridium Blue Emitters Using Aryl N-Heterocyclic Carbene Ligands
Aghazada, Sadig,Huckaba, Aron J.,Pertegas, Antonio,Babaei, Azin,Grancini, Giulia,Zimmermann, Iwan,Bolink, Henk,Nazeeruddin, Mohammad Khaja
, p. 5089 - 5097 (2016/11/23)
The synthesis of a new series of neutral bis[2-(2′,4′-difluorophen-2′-yl)pyridine][1-(2′-aryl)-3-methylimidazol-2-ylidene]iridium(III) complexes is reported. Each complex has been characterized by NMR spectroscopy, UV/Vis spectrophotometry, and cyclic vol
Iridium complexes of N-heterocyclic carbene ligands: Investigation into the energetic requirements for efficient electrogenerated chemiluminescence
Stringer, Bradley D.,Quan, Linh M.,Barnard, Peter J.,Wilson, David J.D.,Hogan, Conor F.
, p. 4860 - 4872 (2015/04/27)
A series of five heteroleptic Ir(III) complexes of the general form Ir(ppy)2(C∧C:) have been prepared (C∧C represents a bidentate cyclometalated phenyl-substituted imidazolylidene ligand). The five complexes arise from the
A new, efficient and recyclable lanthanum(III) oxide-catalyzed C-N cross-coupling
Murthy, S. Narayana,Madhav,Reddy, V. Prakash,Nageswar
supporting information; experimental part, p. 3241 - 3245 (2011/02/23)
A new and efficient protocol for the C-N cross-coupling of aryl halides with heteroaromatic amines in the presence of lanthanum(III) oxide (10 mol%) as a recyclable catalyst, N,N′-dimethylethylenediamine (DMEDA) (20 mol%) and potassium hydroxide (KOH) as a base in dimethyl sulfoxide (DMSO) at 110 °C has been developed. This inexpensive catalytic system is highly effective towards the amination of aryl halides with various nitrogen nucleophiles and is significantly tolerant towards other functional groups in the substrates. Copyright
Ligand-free copper-catalyzed arylation of imidazole and N,N′-carbonyldiimidazole, and microwave-assisted synthesis of N-Aryl-1H-imidazoles
Yang, Xiao-Dong,Li, Liang,Zhang, Hong-Bin
experimental part, p. 1435 - 1442 (2009/02/07)
Microwave-assisted arylation of 1H-imidazoles and N,N′- carbonyldiimidazole under ligand-free copper-mediated conditions in tetraethyl orthosilicate is reported. Valuable evidence for understanding of the Cu-catalyzed mechanism of the Ullmann reaction is
Amino acid promoted CuI-catalyzed C-N bond formation between aryl halides and amines or N-containing heterocycles
Zhang, Hui,Cai, Qian,Ma, Dawei
, p. 5164 - 5173 (2007/10/03)
CuI-catalyzed coupling reaction of electron-deficient aryl iodides with aliphatic primary amines occurs at 40 °C under the promotion of N-methylglycine. Using L-proline as the promoter, coupling reaction of aryl iodides or aryl bromides with aliphatic primary amines, aliphatic cyclic secondary amines, or electron-rich primary arylamines proceeds at 60-90 °C; an intramolecular coupling reaction between aryl chloride and primary amine moieties gives indoline at 70 °C; coupling reaction of aryl iodides with indole, pyrrole, carbazole, imidazole, or pyrazole can be carried out at 75-90 °C; and coupling reaction of electron-deficient aryl bromides with imidazole or pyrazole occurs at 60-90 °C to provide the corresponding N-aryl products in good to excellent yields. In addition, N,N-dimethylglycine promotes the coupling reaction of electron-rich aryl bromides with imidazole or pyrazole to afford the corresponding N-aryl imidazoles or pyrazoles at 110 °C. The possible action of amino acids in these coupling reactions is discussed.
