- Phosphorescent cationic iridium complexes with phenyl-imidazole type cyclometalating ligands: A combined experimental and theoretical study on photophysical, electrochemical and electroluminescent properties
-
Phosphorescent cationic iridium complexes with phenyl-imidazole type cyclometalating ligands have been synthesized for the first time and their photophysical, electrochemical properties have been comprehensively investigated. By changing the ancillary lig
- He, Lei,Wang, Zhen,Yang, Chunpeng,Duan, Lian,Tang, Ruiren,Song, Xiangzhi,Pan, Chunyue
-
-
Read Online
- Palladium-catalyzed direct C2-arylation of azoles with aromatic triazenes
-
A highly efficient palladium-catalyzed arylation of azoles at the C2-position using 1-aryltriazenes as aryl reagents was developed. Azoles including oxazoles, thiazoles, imidazoles, 1,3,4-oxadiazoles, and oxazolines could react with 1-aryltriazenes smoothly to generate the corresponding products in good to excellent yields, and various substitution patterns were tolerated toward the reaction.
- Liu, Can,Wang, Zhiming,Wang, Lei,Li, Pinhua,Zhang, Yicheng
-
p. 9209 - 9216
(2019/11/05)
-
- Phosphorescent Cyclometalated Platinum(II) aNHC Complexes
-
The synthesis and characterization of the first bidentate C^C* cyclometalated platinum(II) complexes based on abnormal N-heterocyclic carbenes (aNHC) is presented. The aNHC ligand precursors are prepared from benzonitriles and anilines to form 1,2,3-trisu
- Soellner, Johannes,Strassner, Thomas
-
p. 15603 - 15612
(2018/09/25)
-
- N-arylation of indoles with aryl halides using copper/glycerol as a mild and highly efficient recyclable catalytic system
-
A simple, efficient, and inexpensive copper catalyzed protocol has been developed for cross-coupling of indoles with aryl halides by using glycerol as a green recyclable solvent and DMSO as an additive. The reaction was carried out at low catalyst loading furnishing various N-aryl indoles in good to excellent yield. This copper/glycerol mixture was recycled up to four runs without any loss in its catalytic activity.
- Yadav, Dilip Kumar T.,Rajak, Sanil S.,Bhanage, Bhalchandra M.
-
p. 931 - 935
(2014/02/14)
-
- N-arylation of indoles with aryl halides using copper/glycerol as a mild and highly efficient recyclable catalytic system
-
A simple, efficient, and inexpensive copper catalyzed protocol has been developed for cross-coupling of indoles with aryl halides by using glycerol as a green recyclable solvent and DMSO as an additive. The reaction was carried out at low catalyst loading furnishing various N-aryl indoles in good to excellent yield. This copper/glycerol mixture was recycled up to four runs without any loss in its catalytic activity.
- Yadav, Dilip Kumar T.,Rajak, Sanil S.,Bhanage, Bhalchandra M.
-
p. 931 - 935
(2015/02/19)
-
- Copper-catalyzed CuAAC/intramolecular C-H arylation sequence: Synthesis of annulated 1,2,3-triazoles
-
Step-economical syntheses of annulated 1,2,3-triazoles were accomplished through copper-catalyzed intramolecular direct arylations in sustainable one-pot reactions. Thus, catalyzed cascade reactions involving [3 + 2]-azide-alkyne cycloadditions (CuAAC) and C-H bond functionalizations provided direct access to fully substituted 1,2,3-triazoles with excellent chemo- and regioselectivities. Likewise, the optimized catalytic system proved applicable to the direct preparation of 1,2-diarylated azoles through a one-pot C-H/N-H arylation reaction.
- Jeyachandran, Rajkumar,Potukuchi, Harish Kumar,Ackermann, Lutz
-
p. 1771 - 1777,7
(2020/09/16)
-
- Efficient and highly regioselective direct C-2 arylation of azoles, including free (NH)-imidazole, -benzimidazole and -indole, with aryl halides
-
The Pd- and Cu-mediated reaction of a large variety of π-electron sufficient heteroarenes, which include free (NH)-imidazoles, -benzimidazole and -indole, with aryl iodides under ligandless and base-free conditions provides regioselectively the required 2-arylheterocycle derivatives in high yields. 2-Aryl-1-phenyl-1H-imidazoles can also be prepared by a one-pot domino HALEX and Pd- and Cu-mediated arylation reactions of 1-phenyl-1H-imidazole with activated and unactivated aryl bromides under base-free and ligandless conditions. The protocol for the synthesis of 2-arylazoles involving the use of aryl iodides has been found to be suitable for the efficient preparation of three bioactive compounds and a key intermediate in the synthesis of a heparanase inhibitor.
- Bellina, Fabio,Calandri, Chiara,Cauteruccio, Silvia,Rossi, Renzo
-
p. 1970 - 1980
(2007/10/03)
-
- Organic light emitting materials and devices
-
An organic light emitting device is provided. The device has an anode, a cathode and an organic layer disposed between the anode and the cathode. The organic layer comprises a compound further comprising one or more arylimidazole, aryltriazole, or aryltet
- -
-
-
- Regiocontrolled synthesis of 1,2-diaryl-1H-imidazoles by palladium- and copper-mediated direct coupling of 1-aryl-1H-imidazoles with aryl halides under ligandless conditions
-
A large variety of 1,2-diaryl-1H-imidazoles, including a selective COX-2 inhibitor, have been regioselectively synthesised in moderate to high yields by direct coupling of 1-aryl-1H-imidazoles with aryl iodides or bromides in DMF in the presence of CsF an
- Bellina, Fabio,Cauteruccio, Silvia,Mannina, Luisa,Rossi, Renzo,Viel, Stephane
-
p. 693 - 703
(2007/10/03)
-
- Regioselective synthesis of 1,5-diaryl-1H-imidazoles by palladium-catalyzed direct arylation of 1-aryl-1H-imidazoles
-
A variety of 1,5-diaryl-1H-imidazoles have been regioselectively synthesized by direct coupling of 1-aryl-1H-imidazoles with aryl iodides or bromides in DMF in the presence of CsF as the base and a catalyst precursor consisting of a mixture of Pd(OAc)sub
- Bellina, Fabio,Cauteruccio, Silvia,Mannina, Luisa,Rossi, Renzo,Viel, Stephane
-
p. 3997 - 4005
(2007/10/03)
-
- Synthesis, structure-activity relationships at the GABAA receptor in rat brain, and differential electrophysiological profile at the recombinant human GABAA receptor of a series of substituted 1,2-diphenylimidazoles
-
A series of new 1,2-diphenylimidazole derivatives (1a-x) were synthesized and evaluated for their ability to potentiate γ-aminobutyric acid (GABA)-evoked currents in Xenopus laevis oocytes expressing recombinant human GABAA receptors. Many of t
- Asproni, Battistina,Talani, Giuseppe,Busonero, Fabio,Pau, Amedeo,Sanna, Sebastiano,Cerri, Riccardo,Mascia, Maria Paola,Sanna, Enrico,Biggio, Giovanni
-
p. 2638 - 2645
(2007/10/03)
-
- Transition metal catalyzed ring opening reactions of 2-phenyl-3-vinyl substituted 2H-azirines
-
Treatment of 2-phenyl-3-vinyl-substituted 2H-azirines with Grubbs' catalyst induces a clean rearrangement and affords products derived from carbon-nitrogen bond cleavage of the 2H-azirine ring. However, when the reaction was carried out using Wilkinson's catalyst in an alcoholic solvent, the only product obtained in high yield corresponded to an α,β-unsaturated oxime.
- Padwa, Albert,Stengel, Thomas
-
p. 5991 - 5993
(2007/10/03)
-
- Diversity synthesis via C-H bond functionalization: Concept-guided development of new C-arylation methods for imidazoles
-
Herein, we have formulated the concept of systematic derivatization of a structural motif via C-H bond functionalization. This concept may not only serve as a blueprint for new strategies in diversity synthesis but also provide systematic guidance for the
- Sezen, Bengue,Sames, Dalibor
-
p. 10580 - 10585
(2007/10/03)
-