6864-20-6Relevant academic research and scientific papers
NOVEL COMPOUND AND ORGANIC ELECTROLUMINESCENT DIVICE INCLUDING THE SAME
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Paragraph 0128; 0132-0136, (2019/03/30)
The present invention relates to a novel arylamine compound, which facilitates hole injection and hole transport, thereby exhibiting effects of low voltage and low power consumption. In addition, the novel arlyamine compound exhibits high efficiency by having high LUMO, which enables electronic blocking, due to a wide band gap and can increase thermal stability through Tg rise by increasing robustness in a molecule, thereby stabilizing the life of a device.COPYRIGHT KIPO 2019
Benzimidazole-based palladium-N-heterocyclic carbene: A useful catalyst for C-C cross-coupling reaction at ambient condition
Gupta, Sumanta,Basu, Basudeb,Das, Sajal
, p. 122 - 128 (2013/01/15)
A convenient way for the synthesis of benzimidazole-based Pd-N-heterocyclic carbene complex and its structural characterization are described. The complex efficiently catalyzes Suzuki cross-coupling reaction in a wide variety of substrates including heteroaromatic system at ambient condition. The catalyst is also effective for multi Suzuki cross-coupling reaction. In addition, the catalyst is equally active toward C-C cross-coupling reaction between acid chloride and arylboronic acid, giving the desired ketones in high yield.
Ligand effects on hydrogen atom transfer from hydrocarbons to three-coordinate iron imides
Cowley, Ryan E.,Holland, Patrick L.
experimental part, p. 8352 - 8361 (2012/09/22)
A new β-diketiminate ligand with 2,4,6-tri(phenyl)phenyl N-substituents provides protective bulk around the metal without exposing any weak C-H bonds. This ligand improves the stability of reactive iron(III) imido complexes with Fe=NAd and Fe=NMes functional groups (Ad = 1-adamantyl; Mes = mesityl). The new ligand gives iron(III) imido complexes that are significantly more reactive toward 1,4-cyclohexadiene than the previously reported 2,6-diisopropylphenyl diketiminate variants. Analysis of X-ray crystal structures implicates Fe=N-C bending, a longer Fe=N bond, and greater access to the metal as potential reasons for the increase in C-H bond activation rates.
Facile synthesis of mono-, bis- and tris-aryl-substituted aniline derivatives in aqueous DMF
Liu, Chun,Song, Xiaoxiao,Ni, Qijian,Qiu, Jieshan
, p. 62 - 75,14 (2020/09/02)
A facile, efficient and general protocol for synthesizing a series of mono-, bis- and tris-arylsubstituted aniline derivatives is described via the Pd(OAc)2-catalyzed aerobic and ligand-free Suzuki reaction of mono-, di- and tribromoanilines with aryl boronic acids in aqueous N,Ndimethylformamide (DMF). This is the first example to prepare 2,6-bisaryl-4-nitroanilines and 2,6-bisarylanilines via a palladium-catalyzed ligand-free Suzuki reaction.
Enantioselective organocatalytic Biginelli reaction: Dependence of the catalyst on sterics, hydrogen bonding, and reinforced chirality
Saha, Satyajit,Moorthy, Jarugu Narasimha
supporting information; experimental part, p. 396 - 402 (2011/04/17)
From a systematic investigation involving the synthesis of a series of catalysts and screening studies, the organocatalyst 16, which is sterically hindered, contains a strong hydrogen-bonding site, and is endowed with reinforced chirality, is shown to pro
The 1,3-diaminobenzene-derived aminophosphine palladium pincer complex {C6H3[NHP(piperidinyl)2]2Pd(Cl)} - A highly active Suzuki-Miyaura catalyst with excellent functional group tolerance
Bolliger, Jeanne L.,Frech, Christian M.
experimental part, p. 1075 - 1080 (2010/06/17)
The rapidly prepared 1,3-diaminobenzenederived aminophosphine pincer complex {C6H3 [NHP(piperidinyl)2] 2Pd(Cl)} (1) is an effective Suzuki catalyst with excellent functional group tolerance. Side-product formations, such as homocoupling, debromation or protodeboration have only rarely been detected and if so, were in all cases below the 5% level. The presented reaction protocol is universally applicable. Experimental observations indicate that palladium nanoparticles are the catalytically active form of 1.
Microwave-assisted Suzuki coupling on a KF-alumina surface: Synthesis of polyaryls
Basu, Basudeb,Das, Pralay,Bhuiyan, Md. Mosharef H.,Jha, Satadru
, p. 3817 - 3820 (2007/10/03)
A range of conjugated polyaryls has been synthesized through one-pot microwave assisted palladium-catalyzed consecutive Suzuki coupling reactions on a KF-alumina surface with notable features including rapid reaction times, solvent-free conditions, high yields, atom economic and air-insensitive reactions.
Preparation and crystal structure of an oxoimido complex of molybdenum containing the 2,4,6-triphenylphenylimide ligand
Clark, George R.,Nielson, Alastair J.,Rickard, Clifton E. F.
, p. 4265 - 4268 (2007/10/03)
Reaction of 2,4,6-triphenylaniline with Na2MoO4 in the presence of SiMe3Cl and NEt3 in 1,2-dimethoxyethane (dme) gave the oxoimido complex [MoCl2(NC6H2Ph3-2,4,6)O(dme)]. Its crystal structure determination showed a distorted octahedron with mutually cis-oxo and imido groups, trans-chloride ligands and the dme oxygen atoms trans to the oxide and imide ligands. The Mo-Nimido and Mo-Ooxo bond lengths [1.756(7) and 1.700(6) A] are consistent with four- and two-electron donor ligands, respectively. The phenyl ring of the imide ligand orientates with the face of one ortho substituent phenyl ring pushing away from a chloride ligand and tilted towards the oxide ligand. The second such phenyl ring tilts away from a chloride ligand but does not push away from the side of the molecule. This occurs as the imido group bends towards the other side of the molecule [Mo-N-C 172.2(7)°] and a methyl group of the dme ligand is severely distorted to remove an interaction with the phenyl ring.
A convenient and efficient synthesis of polyphenylmono-, di-, and -triaminobenzenes
Miura,Oka,Momoki
, p. 1419 - 1422 (2007/10/02)
A new convenient and efficient synthesis of polyphenylmono- and -diaminobenzenes by the palladium(0)-catalyzed cross-coupling reaction of polyhalomono- and -diaminobenzenes with phenylboronic acid is described. A synthesis of 2,4-diphenyl-1,3,5-triaminobe
Syntheses and Spectral Characteristics of Seven Polyphenyls Containing Highly Branched para-Phenylene Ring(s)
Fujioka, Yasuhiro,Ozasa, Shigeru,Sato, Kazumi,Ibuki, Eiichi
, p. 22 - 29 (2007/10/02)
Seven polyphenyls, including four new compounds, 2,2',6'- (2) and 3,2',6'-triphenyl-p-terphenyl (3), 3',5'-diphenyl-p-quarterphenyl (4), and 2-phenyl-3'-(2-biphenylyl)-p-terphenyl (7), were synthesized by the Ullmann coupling reaction of aryl iodide(s) or by the Kharash type coupling reaction of aryl Grignard reagent with an aryl iodide catalyzed by bis(acetylacetonato)-nickel(II).Infrared spectral studies of the polyphenyls showed that the range of 730-770 cm-1, generally accepted as the position of the out-of-plane C-H bending bands of the phenyl ring, should be widened slightly to 730-786 cm-1.The high frequency bands were confirmed to be correlated closely to the overcrowding by terminal rings in the complex structures.Proton magnetic resonance spectral studies indicated that he characteristic spectral features of the branched polyphenyls were consistent with their conformational aspects deduced from stereomodels.In the ultraviolet spetcral studies the polyphenyls containing highly branched p-phenylene ring(s) showed intense K-bands or shoulders at locations very similar to those of the corresponding linear polyphenyls containing the same number of p-phenylene rings. Keywords -- Ullmannn reaction; Ni-complex-catalyzed cross-coupling; quinquephenyl; sexiphenyl; octiphenyl; IR; UV; 1H-NMR
