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Application of 89972-77-0. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-(p-Tolyl)-2,2:6,2-terpyridine, is researched, Molecular C22H17N3, CAS is 89972-77-0, about Proton-Activated Amorphous Room-Temperature Phosphorescence for Humidity Sensing and High-Level Data Encryption. Author is Deng, Yuchen; Li, Peng; Sun, Shujuan; Jiang, Haiyan; Ji, Xu; Li, Huanrong.

Supramol. co-assembling terpyridine-derivatives I and II, with nanoclay (LP) are exploited to acquire efficient amorphous room-temperature phosphorescence (RTP). Exptl. and theor. investigations reveal that this co-assembly not only brings about a configuration transformation from the trans-trans (a) to the cis-trans (a”) form via the protonating process, significantly narrowing the singlet-triplet energy gap, thereby effectively facilitating the single-triplet ISC processes, but also well protects the triplet state and suppresses the nonradiative transitions via restricting mol. rotation and vibration by the hydrogen-bond interactions between them. Addnl., the flexible and transparent films, through co-assembling 1@LP (or 2@LP) with polyvinyl alc. (PVA), also display excellent phosphorescence performance. Owing to their distinctive RTP performances, the RH sensing and high-level data encryption are achieved.

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Metal catalyst and ligand design,
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Category: catalyst-ligand. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 4-(p-Tolyl)-2,2:6,2-terpyridine, is researched, Molecular C22H17N3, CAS is 89972-77-0, about Synthesis, Structure, Photophysical Properties, and Redox Behavior of Cyclometalated Complexes of Iridium(III) with Functionalized 2,2′-Bipyridines. Author is Neve, Francesco; Crispini, Alessandra; Campagna, Sebastiano; Serroni, Scolastica.

The new functionalized polypyridine ligands 4′-(4-chlorophenyl)-6′-phenyl-2,2′-bipyridine (clpbpy), 4′-(4-tolyl)-6′-phenyl-2,2′-bipyridine (tpbpy), and 4′-(4-carboxyphenyl)-6′-phenyl-2,2′-bipyridine (cpbpy), together with the known 4′-(4-hydroxyphenyl)-6′-phenyl-2,2′-bipyridine (hpbpy) and 4′-(4-tolyl)-2,2′:6′,2”-terpyridine (ttpy) have been used to prepare a new series of Ir(III) cyclometalated compounds [Ir(ppy)2(HL-X)][PF6] (ppy is the monoanion of 2-phenylpyridine; HL-X = hpbpy (1), clpbpy (2), tpbpy (3), cpbpy (4), and ttpy (5)). All the new species have been characterized by IR and 1H NMR, and the crystal structure of 4 is also presented and discussed. All the metal complexes exhibit oxidation mainly centered on an orbital derived from an Ir-(C-) σ-bond and ligand-centered reduction processes; all of them are luminescent from 3MLCT levels both at 77 K in a rigid matrix and at 298 K in fluid solution The redox and absorption properties are more or less insensitive to the remote substituents on the rotationally free 4′-Ph ring, whereas fine-tuning of the luminescence properties is observed on changing substituents. The results show that the “”energy gap law”” for radiationless decay in the weak coupling limit is obeyed by this series of complexes, when complex 5 is excluded. Interestingly, the slope of the linear relationship between ln knr and the emission energy at room temperature is significantly smoother than that reported for other luminescent polypyridine complexes containing different metals. Because of the high luminescence quantum yield and the presence of functionalities in the polypyridine ligand framework, the complexes reported may be considered as useful building blocks for light- and redox-active, multicomponent supramol. systems.

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Winter, Andreas; Egbe, Daniel A. M.; Schubert, Ulrich S. published the article 《Rigid π-Conjugated Mono-, Bis-, and Tris(2,2′:6′,2”-terpyridines)》. Keywords: pi conjugated linear star mono bis tris terpyridine synthesis; Horner Wadsworth Emmons reaction pi conjugated terpyridine synthesis; luminescence pi conjugated linear star terpyridine.They researched the compound: 4-(p-Tolyl)-2,2:6,2-terpyridine( cas:89972-77-0 ).Electric Literature of C22H17N3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:89972-77-0) here.

A set of rigid, π-conjugated linear mono- and bisterpyridines and star-shaped tristerpyridines [e.g. I (R = octadecyl) and 1,3,5-C6R13 (R1 = II)] were synthesized using Pd(0)-catalyzed coupling reactions and the Horner-Wadsworth-Emmons reaction. The terpyridyl ligands obtained feature strong emission in the blue range with high quantum yields in dilute solution and thin films.

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Application of 89972-77-0. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-(p-Tolyl)-2,2:6,2-terpyridine, is researched, Molecular C22H17N3, CAS is 89972-77-0, about Neuroprotective effect of 4′-(4-methylphenyl)-2,2′:6′,2-terpyridine trihydrochloride, a novel inducer of nerve growth factor. Author is Yamamoto, Kyoko; Yoshikawa, Ryoko; Okuyama, Shigeru; Takahashi, Yuki; Karasawa, Yasuko; Hino, Noriko; Miyoshi, Toshio; Araki, Hiroaki; Hanabusa, Kenji.

We have identified 4′-(4-methylphenyl)-2,2′:6′,2-terpyridine trihydrochloride (SS701), which belongs to a family of a small unique neuroprotective agents. SS701 accelerated the production of nerve growth factor (NGF) in cultured astroglial cells, dose- and time-dependently. In in vivo studies, SS701, when administered 30 min after induced cerebral ischemia, neuroprotective effects on delayed neuronal death in Mongolian gerbils were evident. The neuroprotective effects of SS701 against ischemia-induced delayed neuronal death are attributed to stimulation of the production of NGF.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 4-(p-Tolyl)-2,2:6,2-terpyridine( cas:89972-77-0 ) is researched.Application In Synthesis of 4-(p-Tolyl)-2,2:6,2-terpyridine.Wang, Xiao-xia; Liu, Han-guo; Wan, Xia; Yin, Xia; Zhou, Fu-shan; Wu, Jian-zhong published the article 《Synthesis of 4-tolyl-2,2′:6′,2”-terpyridine》 about this compound( cas:89972-77-0 ) in Huaxue Shiji. Keywords: methylphenyl terpyridine preparation cyclization. Let’s learn more about this compound (cas:89972-77-0).

3-(4-Methylphenyl)-1,5-di(2-pyridinyl)-1,5-pentanedione was prepared by reaction of 2-acetylpyridine with 4-methylbenzaldehyde at room temperature using ethanol as the solvent. Treatment of the latter compound with concentrated ammonia for 1 h in the presence of sodium hydroxide gave the title compound [i.e., 4′-(4-methylphenyl)-2,2′:6′,2”-terpyridine] in 31.7% yield. The above reaction conditions were mild and the products could be purified easily.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4-(p-Tolyl)-2,2:6,2-terpyridine(SMILESS: CC1=CC=C(C2=CC(C3=NC=CC=C3)=NC(C4=NC=CC=C4)=C2)C=C1,cas:89972-77-0) is researched.Name: Copper(I) tetra(acetonitrile) tetrafluoroborate. The article 《Furin Inhibition by Compounds of Copper and Zinc》 in relation to this compound, is published in Journal of Biological Chemistry. Let’s take a look at the latest research on this compound (cas:89972-77-0).

Furin, a human subtilisin-related proprotein convertase (SPC), is emerging as an important pharmaceutical target because it processes vital proteins of many aggressive pathogens. Furin inhibitors reported as yet are peptide derivatives and proteins, with the exception of andrographolides, which are natural compounds Here we report that the small and highly stable compounds M(chelate)Cl2 (M is copper or zinc) inhibit furin and Kex2, with Cu(TTP)Cl2 and Zn(TTP)Cl2 as the most efficient inhibitors. 4′-[P-tolyl]-2,2′:6′,2”-terpyridine (TTP) inhibitor is irreversible, competitive with substrate, and affected by substituents on the chelate. The free chelates are not inhibitors. Solvated Zn2+ is less potent than its complexes. This is true also for copper and Kex2. However, solvated Cu2+ (kon of 25,000±2,500 s-1) is more potent than Cu(TTP)Cl2 (kon = 140±13 s-1) and allows recovery of furin activity prior to a second inhibition phase. A mechanism that involves coordination to the catalytic histidine is proposed for all inhibitors. Target specificity is indicated by the fact that these metal chelate inhibitors are much less potent toward Kex2, the yeast homolog of furin. For example, kon with Zn(TTP)Cl2 is 120±20 s-1 for furin, but only 1.2±0.1 s-1 for Kex2.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Vaduvescu, Simona; Potvin, Pierre G. published an article about the compound: 4-(p-Tolyl)-2,2:6,2-terpyridine( cas:89972-77-0,SMILESS:CC1=CC=C(C2=CC(C3=NC=CC=C3)=NC(C4=NC=CC=C4)=C2)C=C1 ).Reference of 4-(p-Tolyl)-2,2:6,2-terpyridine. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:89972-77-0) through the article.

Four ditopic bridging ligands, containing 2,2′:6′,2”-terpyridine and 2,6-dipyrazinylpyridine (dpp) metal-binding units attached through p- or m-phenylene linkages, were incorporated into eight mono-, di- and trinuclear linear Ru(II) complexes. These were characterized by UV/visible spectroscopy and cyclic voltammetry, and by their ability to undergo light-induced electron transfers to methylviologen. The dpp-bearing complexes were more difficult to prepare but were superior sensitizers, a fact attributable to longer excited state lifetimes and an electrostatically favored reductive quenching pathway.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Bertrand, Helene; Monchaud, David; De Cian, Anne; Guillot, Regis; Mergny, Jean-Louis; Teulade-Fichou, Marie-Paule published the article 《The importance of metal geometry in the recognition of G-quadruplex-DNA by metal-terpyridine complexes》. Keywords: terpyridine derivative ligand preparation transition metal complex; DNA binding terpyridine derivative ligand transition metal complex.They researched the compound: 4-(p-Tolyl)-2,2:6,2-terpyridine( cas:89972-77-0 ).Recommanded Product: 4-(p-Tolyl)-2,2:6,2-terpyridine. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:89972-77-0) here.

A family of terpyridine metallo-organic complexes (of Cu, Pt, Ru and Zn) was designed and its recognition properties of G-quadruplex-DNA studied. The series combines easy synthetic access and good affinity-selectivity ratio for quadruplex-DNA. The authors’ study also highlights that the geometry of the metal center strongly governs the ability of the compounds to discriminate quadruplex from duplex-DNA.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 4-(p-Tolyl)-2,2:6,2-terpyridine, is researched, Molecular C22H17N3, CAS is 89972-77-0, about Synthesis, crystal structure and electrochemical behavior of two new Ni-based complexes: [Ni2(ttpy)2(SCN)4] and [Ni(ttpy)2](CH3OH)2(2I), the main research direction is nickel tolylterpyridine complex preparation crystal structure cyclic voltammetry.Computed Properties of C22H17N3.

A simple synthetic procedure was used to prepare two new nickel(II) complexes [Ni2(ttpy)2(SCN)4], (1) and [Ni(ttpy)2](CH3OH)2(2I), (2) from 4′-p-tolyl-2,2′:6′,2”-terpyridine (ttpy) ligand, potassium thiocyanate, and potassium iodide in good yields. The single crystal x-ray analyses reveal that the metals in these complexes are sixfold coordinated with M:L ratio of 1:1 and 1:2 for (1) and (2), resp. In both complexes, the Ni(II) has distorted octahedral geometry including N5S and N6 environments. Versatile interactions in supramol. level containing coordinative bonding, I···H, and N···H hydrogen bonding, π-π stacking play considerable roles in forming crystal packing of (1) and (2). From obtained data differences in coordination abilities, of used counterions, cause the formation of complexes with 1:1 or 1:2 ratio of metal and ligand. Electrochem. behaviors of the both complexes were studied.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 89972-77-0, is researched, SMILESS is CC1=CC=C(C2=CC(C3=NC=CC=C3)=NC(C4=NC=CC=C4)=C2)C=C1, Molecular C22H17N3Journal, Yingxiang Kexue Yu Guang Huaxue called Investigation on mixed-valence charge transfer state of cobalt(II)-bis[4′-ferrocenyl-2,2′: 6′,2”-terpyridyl] complex, Author is Liu, Xian-yu; Wang, Jiu-ju; Li, Zhi-jun; Zhang, Li-ping; Tong, Zhen-he; Wu, Li-zhu, the main research direction is mixed valence charge transfer cobalt ferrocenyl terpyridyl complex.Name: 4-(p-Tolyl)-2,2:6,2-terpyridine.

Cobalt(II)-bis[4′-ferrocenyl-2,2′: 6′,2”-terpyridyl] complex 1 and reference complexes cobalt(II)-bis[4′-(4-methylphenyl)-2,2′: 6′,2”-terpyridyl] (2) and cobalt(II)-bis[2,2′: 6′,2”-terpyridyl] (3) were designed and synthesized. Complex 1 exhibits obvious low-energy absorption from 500 to 700 nm due to introduction of electro-donating ferrocenyl group, which could be switched to mixed-valence charge transfer state ranged from 500 to 800 nm upon partial oxidation

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI