190199-40-7Relevant academic research and scientific papers
Cation Radical Accelerated Nucleophilic Aromatic Substitution via Organic Photoredox Catalysis
Tay, Nicholas E. S.,Nicewicz, David A.
supporting information, p. 16100 - 16104 (2017/11/22)
Nucleophilic aromatic substitution (SNAr) is a direct method for arene functionalization; however, it can be hampered by low reactivity of arene substrates and their availability. Herein we describe a cation radical-accelerated nucleophilic aromatic substitution using methoxy- and benzyloxy-groups as nucleofuges. In particular, lignin-derived aromatics containing guaiacol and veratrole motifs were competent substrates for functionalization. We also demonstrate an example of site-selective substitutive oxygenation with trifluoroethanol to afford the desired trifluoromethylaryl ether.
N-Arylation of nitrogen containing heterocycles with aryl halides using copper nanoparticle catalytic system
Pai, Gita,Chattopadhyay, Asoke P.
, p. 3140 - 3145 (2016/07/06)
Cu nanoparticles promoted N-arylation of NH-heterocycles with aryl halides is an effective and inexpensive method. In this synthetic protocol, good to excellent yields are obtained. Both aryl iodide and aryl bromide are compatible with the reaction conditions.
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
Detailed analysis and follow-up studies of a high-throughput screening for indoleamine 2,3-dioxygenase 1 (IDO1) inhibitors
R?hrig, Ute F.,Majjigapu, Somi Reddy,Chambon, Marc,Bron, Sylvian,Pilotte, Luc,Colau, Didier,Van Den Eynde, Beno?t J.,Turcatti, Gerardo,Vogel, Pierre,Zoete, Vincent,Michielin, Olivier
, p. 284 - 301 (2014/08/05)
Indoleamine 2,3-dioxygenase 1 (IDO1) is a key regulator of immune responses and therefore an important therapeutic target for the treatment of diseases that involve pathological immune escape, such as cancer. Here, we describe a robust and sensitive high-throughput screen (HTS) for IDO1 inhibitors using the Prestwick Chemical Library of 1200 FDA-approved drugs and the Maybridge HitFinder Collection of 14,000 small molecules. Of the 60 hits selected for follow-up studies, 14 displayed IC50 values below 20 μM under the secondary assay conditions, and 4 showed an activity in cellular tests. In view of the high attrition rate we used both experimental and computational techniques to identify and to characterize compounds inhibiting IDO1 through unspecific inhibition mechanisms such as chemical reactivity, redox cycling, or aggregation. One specific IDO1 inhibitor scaffold, the imidazole antifungal agents, was chosen for rational structure-based lead optimization, which led to more soluble and smaller compounds with micromolar activity.
Mild transition-metal-free amination of fluoroarenes catalyzed by fluoride ions
Dehe, Daniel,Munstein, Isabel,Reis, Andreas,Thiel, Werner R.
experimental part, p. 1151 - 1154 (2011/05/02)
Trimethylsilyl-protected heterocycles undergo N-C bond formation with a variety of electron-deficient fluoroarenes catalyzed by fluoride ions. This reaction avoids stoichiometric amounts of base and thus makes N-arylheterocycles accessible in a very mild and transition-metal-free way.
