Tag: 100-200

On August 18, 2014, Hurley, Nicholas J.; Hayward, John J.; Rawson, Jeremy M.; Murrie, Mark; Pilkington, Melanie published an article.SDS of cas: 75449-26-2 The title of the article was Exploring the Coordination Chemistry of 3,3′-Di(picolinamoyl)-2,2′-bipyridine: One Ligand, Multiple Nuclearities. And the article contained the following:

The syntheses, structures, and magnetic properties of three new coordination complexes, tetranuclear [Zn2L3(OAc)(OMe)]2·3MeOH·H2O (3), trinuclear [Ni3(L3)3]·6H2O (4), and a 1-dimensional chain {[Cu2L3(OAc)2]2·H2O}n (6), of a polydentate, doubly deprotonated, disubstituted bipyridine ligand, 3,3′-bis(picolinamido)-2,2′-bipyridine, [L3]2-, are reported. The x-ray crystal structures demonstrate that the ditopic ligand provides a flexible N3 donor set for transition metal ions where each binding pocket shifts from fac to intermediate fac/mer to the mer isomer affording a Ni3 triangle, a Zn4 tetramer, and a 1-dimensional Cu(II) polymer, resp. This variation in coordination preference is rationalized with the aim of designing future ligands with controlled coordination modes. Magnetic susceptibility studies on 4 reveal it belongs to the rare family of ferromagnetically coupled [Ni3] clusters. In contrast, magnetic studies of the 1-dimensional chain 6 reveal weak antiferromagnetic interactions due to the poor orbital overlap of the singly occupied Cu(II) dx2-y2 orbitals with the 1-atom bridge that connects them along the Jahn-Teller distortion axis. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).SDS of cas: 75449-26-2

The Article related to transition metal bispicolinamidobipyridine multinuclear complex coordination polymer preparation, crystal structure transition metal bispicolinamidobipyridine multinuclear complex coordination polymer, magnetic property transition metal bispicolinamidobipyridine multinuclear complex coordination polymer and other aspects.SDS of cas: 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On July 1, 2010, Aydemir, Murat; Durap, Feyyaz; Baysal, Akin; Meric, Nermin; Buldag, Ayseguel; Guemguem, Bahattin; Oezkar, Saim; Yildirim, Leyla Tatar published an article.COA of Formula: C10H10N4 The title of the article was Novel neutral phosphinite bridged dinuclear ruthenium(II) arene complexes and their catalytic use in transfer hydrogenation of aromatic ketones: X-ray structure of a new Schiff base, N3,N3′-di-2-hydroxybenzylidene-[2,2′]bipyridinyl-3,3′-diamine. And the article contained the following:

A novel Schiff base N3,N3′-di-2-hydroxybenzylidene-[2,2′]bipyridinyl-3,3′-diamine (1) was synthesized from condensation of salicylaldehyde with 3,3′-diamino-2,2′-bipyridine. Reaction of 1 with two equivalent of PPh2Cl in the presence of Et3N proceeds in toluene to give N3,N3′-di-2-(diphenylphosphino)benzylidene-[2,2′]bipyridinyl-3,3′-diamine (2) in quant. yield. Ruthenium(II) dimers [Ru(η6-arene)(μ-Cl)Cl]2 readily react with phosphinite ligand [(Ph2PO)2-C24H16N4], 2 in toluene at room temperature, to afford the neutral derivatives [C24H16N4{OPPh2-Ru(η6-arene)Cl2}2] {arene = benzene 3; p-cymene, 4}. All the complexes were fully characterized by anal. and spectroscopic methods. 31P-{1H} NMR, 1H-13C HETCOR or 1H-1H COSY correlation experiments were used to confirm the spectral assignments. Mol. structure of the Schiff base, 1 was also determined by x-ray single crystal diffraction study. The catalytic activity of complexes 3 and 4 in the transfer hydrogenation of acetophenone derivatives was tested. Stable ruthenium(II)-phosphinite complexes were found to be efficient catalysts in the transfer hydrogenation of aromatic ketones in excellent conversions up to 99% (up to 530 per h) in the presence of iso-PrOH/KOH. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).COA of Formula: C10H10N4

The Article related to crystal structure hydroxybenzylidene bipyridinyldiamine schiff base preparation, mol structure hydroxybenzylidene bipyridinyldiamine schiff base, ruthenium schiff base phosphinite bridged dinuclear complex preparation, ketone transfer hydrogenation catalyst ruthenium schiff base phosphinite complex and other aspects.COA of Formula: C10H10N4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Wang, Jian; Hayward, John J.; Gumbau-Brisa, Roger; Wallis, John D.; Stoeckli-Evans, Helen; Pilkington, Melanie published an article in 2015, the title of the article was Probing the reactivity of a 2,2′-bipyridyl-3,3′-bis-imine ligand by X-ray crystallography.Synthetic Route of 75449-26-2 And the article contains the following content:

The reactivity of a Schiff-base bis-imine ligand 3 (N3,N3-bis(2-pyridinylmethylene)[2,2′-bipyridine]3,3′-diamine) is probed by x-ray diffraction studies. Its susceptibility to hydrolysis, oxidation and nucleophilic addition reactions of 3 is demonstrated by the isolation of the methanol adduct 4 and two diazepine heterocycles 5 and 6. This reactivity is also reflected in the mol. structures of two coordination complexes isolated by the reaction of 3 with M(hfac)2 salts, to afford [Cu(5)(hfac)(tfa)] (8) and [Zn(6)(hfac)2] (9), where Hhfac = hexafluoroacetylacetone and tfa = trifluoroacetic acid. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Synthetic Route of 75449-26-2

The Article related to crystal structure bipyridylbisimine schiff base preparation, bipyridylbisimine schiff base hydrolysis oxidation nucleophilic addition reaction product, zinc copper bipyridylbisimine schiff base complex crystal structure preparation, copper bipyridylbisimine schiff base magnetic property and other aspects.Synthetic Route of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On June 30, 1989, Fife, Wilmer K.; Mubasher, Amal Al published an article.Synthetic Route of 109660-12-0 The title of the article was Multistep functionalization of insoluble copolymers of 4-vinylpyridine. Synthesis and characterization of two new metal ion-binding resins. And the article contained the following:

A com. available macroreticular resin containing 73 mol % 4-vinylpyridine crosslinked with 21 mol % divinylbenzene (I) was successfully derivatized at the pyridine rings by a multi-step synthetic pathway. First-time application of reactions well established for monomeric pyridine derivatives (N-oxidation, Reissert-Henze cyanation, and 2-oxazoline formation) to a copolymer of 4-vinylpyridine furnished the new functionalized resins, I-4-vinyl-2-(4,4-dimethyl-2-oxazolinyl)pyridine copolymer (II) and I-4-vinyl-2-pyridinecarboxylic acid copolymer (III) in yields for functionalization of pyridine residues of 58% in each case. Estimates of formation constants for 1:1 complexes of Cu(II) and Ni(II) ions with the oxazolinylpyridine and 2-pyridinecarboxylate residues of the new resins were obtained with a competitive spectrophotometric method. The formation constants for the Cu(II)- and Ni(II)-II complexes were 107.7 M-1 for Cu(II) and 105.8 M-1 for Ni(II). The formation constants for the Cu(II) and Ni(II) complexes with III were 108.8 and 105.5 M-1, resp. The experimental process involved the reaction of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine(cas: 109660-12-0).Synthetic Route of 109660-12-0

The Article related to vinylpyridine divinylbenzene copolymer metal complex, oxazolinylpyridine divinylbenzene copolymer metal complex, pyridinecarboxylate divinylbenzene copolymer metal complex, copper vinylpyridine divinylbenzene copolymer complex, nickel vinylpyridine divinylbenzene copolymer complex and other aspects.Synthetic Route of 109660-12-0

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Carballo, Rosa; Fernandez-Hermida, Nuria; Lago, Ana B.; Rodriguez-Hermida, Sabina; Vazquez-Lopez, Ezequiel M. published an article in 2012, the title of the article was Supramolecular networks through second-sphere coordination based on 1D metal-4,4′-dipyridyldisulfide coordination polymers and hydrogenfumarate or sulfonate anions.Quality Control of Pyridine-3-sulfonic acid And the article contains the following content:

Four H-bonded assemblies [M(dpds)2(OH2)2]A2·nH2O (A = anion) are described. These assemblies result from the 2nd-sphere coordination interactions between the 1-dimensional coordination polymers [M(dpds)2(OH2)2]2+, M = Zn(II), and Cu(II), dpds = 4,4′-dipyridyldisulfide, and the pyridine-3-sulfonate (3pySO3-) or hydrogenfumarate (Hfum-) anions. Significantly, supramol. structural variations are observed depending on the presence of H2O lattice mols., which formed discrete aggregates when the Hfum- anion was used. The effects of geometrical variations in the building blocks are also evident on using Jahn-Teller-distorted divalent Cu(II) ions or regular octahedral species based on Zn(II) ions. The 2nd-sphere effects on the stabilization of the compounds are illustrated by TGA experiments The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Quality Control of Pyridine-3-sulfonic acid

The Article related to preparation copper zinc dipyridyldisulfide complex pyridinesulfonate fumarate anion, crystal structure copper zinc dipyridyldisulfide complex pyridinesulfonate fumarate anion, supramol structure copper zinc dipyridyldisulfide complex pyridinesulfonate fumarate anion and other aspects.Quality Control of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On November 9, 2006, Kelly, Michael G.; Kincaid, John; Kaub, Carl J. published a patent.Related Products of 39919-70-5 The title of the patent was Preparation of fused heterocyclic compounds for preventing and treating various diseases. And the patent contained the following:

The title compounds I [A, B = (un)substituted CH2, CO or CS; Y = (un)substituted CH2; W = CR4, N; Z = O, NR2; L = (hetero)alkylene; R1 = carbocyclyl or heterocyclyl; R2 = H, alkyl, cycloalkyl; R3 = carbocyclyl or heterocyclyl; R4 = H, alkyl, acyl, etc.; R5 = R4, Z’-L’-R4 (wherein Z’ = a bond, O, S, etc.; L’ = alkylene)], useful for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example, pain, inflammation, cognitive disorders, anxiety, depression, and others, were prepared and formulated. E.g., a multi-step synthesis of II, starting from Et 1-benzyl-4-oxopiperidine-3-carboxylate hydrochloride, was given. The exemplified compounds I were tested in calcium uptake assay (P2X2 and P2X3) and % inhibition data were given for representative compounds I. The experimental process involved the reaction of 6-(tert-Butyl)pyridin-3-amine(cas: 39919-70-5).Related Products of 39919-70-5

The Article related to fused heterocycle pyridopyrimidinamine preparation purinoceptor antagonist analgesic antiinflammatory anxiolytic, cognition enhancer pyridopyrimidinamine preparation purinoceptor antagonist, antidepressant pyridopyrimidinamine preparation purinoceptor antagonist and other aspects.Related Products of 39919-70-5

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Mondal, Dipanjan; Sardar, Gopa; Kabra, Dinesh; Balakrishna, Maravanji S. published an article in 2022, the title of the article was 2,2′-Bipyridine derived doubly B- N fused bisphosphine-chalcogenides, [C5H3N(BF2){NCH2P(E)Ph2}]2 (E = O, S, Se): tuning of structural features and photophysical studies.Product Details of 75449-26-2 And the article contains the following content:

2,2′-Bipyridine based bisphosphine [C5H3N{N(H)CH2PPh2}]2 (1) and its bischalcogenide derivatives [C5H3N{N(H)CH2P(E)Ph2}]2 (2, E = O; 3, E = S; 4, E = Se) were synthesized, and further reacted with BF3·Et2O/Et3N to form doubly B-N fused compounds [C5H3N(BF2){NCH2P(E)Ph2}]2 (5, E = O; 6, E = S; 7, E = Se) in excellent yields. The influence of the P=E bonds on the electronic properties of the doubly B-N fused systems and their structural features were investigated in detail, supported by extensive exptl. and computational studies. Compound 6 exhibited a very high quantum yield of ϕ = 0.56 in CH2Cl2, whereas compound 7 showed a least quantum yield of ϕ = 0.003 in acetonitrile. D. functional theory (DFT) calculations demonstrated that the LUMO/HOMO of compounds 5-7 mostly delocalized over the entire π-conjugated frameworks. The involvement of PE bonds in the HOMO energy level of these compounds follows the order: PO < PS < PSe. Time-correlated single photon counting (TCSPC) experiments of compounds 5-7 revealed the singlet lifetime of 4.26 ns for 6, followed by 4.03 ns for 5 and a lowest value of 2.18 ns (τ1) and 0.47 ns (τ2) with a double decay profile for 7. The authors' findings provide important strategies for the design of highly effective B-N bridged compounds and tuning their photophys. properties by oxidizing phosphorus with different chalcogens. Compounds 5 and 6 have been employed as green emitters (λem = 515 nm) in fluorescent organic light-emitting diodes (OLEDs). For compound 5, doped into the poly(9-vinylcarbazole) (PVK) matrix with 5 wt% doping concentration, nearly 90 Cd m-2 luminance with 0.022% external quantum efficiency (EQE) was achieved. The best performance was observed for compound 6 doped into PVK by 1 wt% having a maximum luminance of 350 Cd m-2 and a similar EQE value. The experimental process involved the reaction of [2,2'-Bipyridine]-3,3'-diamine(cas: 75449-26-2).Product Details of 75449-26-2

The Article related to boron bipyridinylbisphosphinylchalcogenide complex preparation frontier mol orbital fluorescence lifetime, fluorescence oled redox potential boron bipyridinylbisphosphinylchalcogenide complex, crystal structure boron bipyridinylbisphosphinylchalcogenide complex and other aspects.Product Details of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Cheng, Jianjun; Deming, Timothy J. published an article in 1999, the title of the article was Enantioselective polymerization of 5-benzyl glutamate N-carboxyanhydride using chiral nickel(0) initiators.Application In Synthesis of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine And the article contains the following content:

Enantioselective polymerization of 5-benzyl glutamate NCA was investigated using chiral bidentate nitrogen ligands in combination with a nickel zero initiation system. We found that ligands having mixed pyridine-oxazoline structures gave excellent control of mol. weight and narrow mol. weight distributions. Moderately high enantioselectivities were induced when chiral 2-pyridinyl oxazoline ligands were utilized. The highest enantioselectivity was found with (4S)-4-tert-butyl-(2-pyridinyl)-2-oxazoline. The experimental process involved the reaction of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine(cas: 109660-12-0).Application In Synthesis of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine

The Article related to polybenzyl glutamate preparation catalyst nickel, benzyl glutamate carboxyanhydride polymerization nickel catalyst, enantioselective polymerization catalyst nickel, pyridine ligand nickel polymerization catalyst, oxazoline ligand nickel polymerization catalyst and other aspects.Application In Synthesis of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On May 10, 2021, Karges, Johannes; Kalaj, Mark; Gembicky, Milan; Cohen, Seth M. published an article.Reference of [2,2′-Bipyridine]-3,3′-diamine The title of the article was ReI tricarbonyl complexes as coordinate covalent inhibitors for the SARS-CoV-2 main cysteine protease. And the article contained the following:

Since its outbreak, the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) has impacted the quality of life and cost hundreds-of-thousands of lives worldwide. Based on its global spread and mortality, there is an urgent need for novel treatments which can combat this disease. To date, the 3-chymotrypsin-like protease (3CLpro), which is also known as the main protease, is considered among the most important pharmacol. targets. The vast majority of investigated 3CLpro inhibitors are organic, non-covalent binders. Herein, the use of inorganic, coordinate covalent binders is proposed that can attenuate the activity of the protease. ReI tricarbonyl complexes were identified that demonstrate coordinate covalent enzymic inhibition of 3CLpro. Preliminary studies indicate the selective inhibition of 3CLpro over several human proteases. This study presents the first example of metal complexes as inhibitors for the 3CLpro cysteine protease. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Reference of [2,2′-Bipyridine]-3,3′-diamine

The Article related to rhenium tricarbonyl complex coordinate inhibitor main protease sars cov2, synthesis crystal structure rhenium tricarbonyl complex protease inhibitor 3clpro, sars-cov-2, antiviral agents, bioinorganic chemistry, medicinal inorganic chemistry, protease inhibitor and other aspects.Reference of [2,2′-Bipyridine]-3,3′-diamine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On January 31, 1979, Sadikov, A. S.; Otroshchenko, O. S.; Yunusov, T. K. published an article.Category: pyridine-derivatives The title of the article was Sulfur-containing derivatives of anabasine and its analogs. And the article contained the following:

Treatment of anabasine, isoanabasine and 2,3′-dipiperidyl with SOCl2, SCl2, elemental S, concentrated H2SO4, and sulfoacids of N heterocyclic bases gave a series of biol. active S-containing derivatives, e.g. I and II, of anabasine and its analogs. Dependences between the structure of substrates and their chem. reactivity were discussed. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Category: pyridine-derivatives

The Article related to anabasine reaction sulfur compound, isoanabasine reaction sulfur, dipiperidyl reaction sulfur, sulfur reaction anabasine, thionyl chloride reaction anabasine, sulfur chloride reaction anabasine, sulfuric acid reaction anabasine, sulfo acid reaction anabasine and other aspects.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem