121404-36-2Relevant academic research and scientific papers
Highly efficient cadmium-catalyzed three-component coupling of an aldehyde, alkyne, and amine via C-H activation under microwave conditions
Raghuvanshi, Dushyant Singh,Singh, Krishna Nand
, p. 373 - 377 (2011)
The first use of Cd2+ as catalyst for a facile three-component coupling of an aldehyde, alkyne, and amine has been demonstrated to synthesize propargylamines under microwave irradiation in chlorobenzene without the use of a co-catalyst or activator in the absence of inert atmosphere. This method has been proved to be applicable to a wide range of substrates. Georg Thieme Verlag Stuttgart New York.
Novel phosphine oxide-based electron-transporting materials for efficient phosphorescent organic light-emitting diodes
Wu, Zheng-Guang,Zhou, Jie,Yu, Lei,Karotsis, Georgios,Wang, Yi,Zheng, You-Xuan,Pan, Yi
, p. 8579 - 8585 (2017)
Three phosphoryl quinoline derivatives, (2,4-diphenylquinolin-3-yl)diphenylphosphine oxide (QDPO), (2,4-diphenylbenzo[h]quinolin-3-yl)diphenylphosphine oxide (B-QDPO) and (2-([1,1′-biphenyl]-4-yl)-4-phenylquinolin-3-yl)diphenylphosphine oxide (BP-QDPO), comprising two electron-transporting moieties namely a nitrogen heterocycle and a phosphoryl (PO) group, have been designed and synthesized. All materials exhibit suitable LUMO (lowest unoccupied molecular orbital)/HOMO (highest occupied molecular orbital) levels, large triplet energy gaps (ET > 3.1 eV) and excellent thermal stabilities. These materials were utilized as electron transporting materials for fabricating green phosphorescent organic light-emitting diodes with the configuration of indium tin oxide (ITO)/MoO3 (5 nm)/TAPC (di-[4-(N,N-ditolyl-amino)-phenyl]cyclohexane) (30 nm)/Ir(tfmppy)2tpip (bis(4-trifluoromethylphenylpyridine-N,C2′)iridium(tetraphenylimido-diphosphinate)) (8 wt%): mCP [1,3-bis(N-carbazolyl)benzene] (10 nm)/QDPO or B-QDPO or BP-QDPO (30 nm)/LiF (1 nm)/Al (100 nm). These devices exhibited decent performances with a peak current efficiency above 80 cd A-1 and an external quantum efficiency above 20% as well as negligible efficiency roll-off.
A facile synthesis methodology for preparation of Ag-Ni-reduced graphene oxide: a magnetically separable versatile nanocatalyst for multiple organic reactions and density functional study of its electronic structures
Chandel, Madhurya,Makkar, Priyanka,Ghosh, Barun Kumar,Moitra, Debabrata,Ghosh, Narendra Nath
, p. 37774 - 37788 (2018)
Here, we report a simple ‘in situ' co-precipitation reduction synthesis method for the preparation of nanocatalysts composed of Ag, Ni nanoparticles, and reduced graphene oxide (RGO). First-principles calculations based on Density Functional Theory (DFT) were performed to obtain the electronic structures and properties of Ag-Ni-graphene superlattice and to understand the interfacial interactions which exist at the interface between Ag, Ni, and graphene. The catalytic performance of the synthesized catalysts (AgxNi(1?x))yRGO(100?y) were evaluated for four reactions (i) reduction of 4-nitrophenol (4-NP) in the presence of excess NaBH4 in aqueous medium, (ii) A3 coupling reaction for the synthesis of propargylamines, (iii) epoxidation of styrene, and (iv) ‘Click reaction' for the synthesis of 1,2,3-triazole derivatives. For all of these reactions the catalyst composed of Ag, Ni, and RGO, exhibited significantly higher catalytic activity than that of pure Ag, Ni, and RGO. Moreover, an easy magnetic recovery of this catalyst from the reaction mixture after completion of the catalytic reactions and the good reusability of the recovered catalyst is also reported here. To the best of our knowledge, this is the first time the demonstration of the versatile catalytic activity of (AgxNi(1?x))yRGO(100?y) towards multiple reactions, and the DFT study of its electronic structure have been reported.
Rhenium-catalyzed addition of trimethylsilylacetylene to aldimines
Kuninobu, Yoichiro,Inoue, Yuichi,Takai, Kazuhiko
, p. 1376 - 1377 (2006)
A rhenium complex, [ReBr(CO)3(thf)]2, catalyzes reactions of aldimines with trimethylsilylacetylene to give propargylamines in excellent yields. The reactions proceed at room temperature under solvent-free conditions. Copyright
Synthesis of Fully Substituted Pyrroles through a Copper-Catalyzed Aza-Michael/Claisen Rearrangement/Cyclization Cascade
Cui, Hai-Lei,Jiang, Lu,Jiang, Xue-Fei,Li, Meng-Fan,Liu, Si,Liu, Si-Wei,Tan, Hao,Tang, Xue,Yuan, Chang
, p. 723 - 729 (2020)
We have developed a copper-catalyzed aza-Michael/Claisen rearrangement/cyclization cascade sequence that affords structurally diverse pentasubstituted pyrroles in acceptable to good yields (31-84%).
NiO nanoparticles catalyzed three component coupling reaction of aldehyde, amine and terminal alkynes
Gajengi, Aravind L.,Sasaki, Takehiko,Bhanage, Bhalchandra M.
, p. 174 - 179 (2015)
This work reports a simple, microwave assisted facile and efficient protocol for the synthesis of nickel oxide nanoparticles (NiO NPs) by using only two reagents i.e. nickel acetate and benzylamine. Nickel acetate reacts with benzylamine to give nickel hydroxide and which on calcination give NiO NPs. Benzylamine plays various role in this reaction such as solvent, reactant and stabilizer. The developed protocol is faster, economically viable and environmentally benign as it is additive free. Transmission electron microscope (TEM) reveals the particles are in nano range and X-ray diffraction (XRD) data shows crystalline nature of NiO NPs. The prepared NiO NPs were used as heterogeneous catalyst for three component coupling reaction of aldehyde, amine with terminal alkynes. The catalyst could be recycled up to fourth run without significant loss in the catalytic activity.
Carbohydrate-based spiro bis(isoxazolines): synthesis and evaluation in asymmetric catalysis
Goyard, David,Telligmann, Susanne M.,Goux-Henry, Catherine,Boysen, Mike M.K.,Framery, Eric,Gueyrard, David,Vidal, Sébastien
, p. 374 - 377 (2010)
Two carbohydrate-based spiro bis(isoxazolines) were synthesized via 1,3-dipolar cycloaddition from peracetylated methylene exo-glucal and the corresponding bis(arylnitrile oxide). The bis(cycloadducts) were then evaluated as ligands for enantioselective catalytic reactions. The Pd-catalyzed Tsuji-Trost reaction between a malonate and an allylic acetate did not provide good results. The poor conversion observed can be attributed to the rearrangement of the ligand in the reaction mixture to afford the corresponding ring-opened isoxazole which has been characterized. Both ligands were also evaluated in Cu(I)-catalyzed asymmetric imine alkynylation and afforded the product in good yield and modest enantioselectivity.
Copper(I) and silver(I) complexes containing the enantiopure N,N-bidentate 1,3-bis[4′-(S)-isopropyloxazolin-2′-yl]benzene ((S,S)-iPr-pheboxH) ligand
Vega, Esmeralda,De Julián, Eire,Borrajo, Gustavo,Díez, Josefina,Lastra, Elena,Gamasa, M. Pilar
, p. 59 - 66 (2015)
Abstract The reaction of CuX (X = I, Br, Cl) with (S,S)-iPr-pheboxH = 1,3-bis[4′-(S)-isopropyloxazolin-2′-yl]benzene in 2:1 molar ratio allows us to synthesize tetranuclear complexes [Cu4X4(k2-N,N-iPr
A facile solvent-free one-pot three-component Mannich reaction of aldehydes, amines and terminal alkynes catalysed by CuCl2
Sharifi, Ali,Mirzaei, Mojtaba,Naimi-Jamal, M. Reza
, p. 129 - 132 (2007)
A solventless Mannich condensation of aldehydes, amines, and terminal alkynes catalysed by 10 mol% of CuCl2 was investigated. The components were simply mixed and heated together under vacuum, without any need of solid-support or solvent. This results in the formation of Mannich products in high yields.
The synthesis of chiral N-tosylatedaminoimine ligands and their application in enantioselective addition of phenylacetylene to imines
Liu, Bao,Liu, Juntao,Jia, Xian,Huang, Ling,Li, Xingshu,Chan, Albert S.C.
, p. 1124 - 1128 (2007)
A class of new chiral tridentate N-tosylatedaminoimine ligands were synthesized and used in the Cu(I)-catalyzed enantioselective addition of phenylacetylene to imines. Good enantioselectivities in up to 91% ee were obtained.
