Day: November 3, 2022

On June 30, 1983, Hsieh, Chun Chin; Wang, Ching Bore; Lin, Lung Ching published an article.Formula: C16H22Br2N2 The title of the article was Mass spectral study on 1,1′-dialkyl-4,4′-bipyridinium bromides. And the article contained the following:

The electron-impact mass spectra of eight title salts (I; R, R1 = alkyl; X = halo) and 1-hexadecylpyridinium bromide were studied. An ion peak of M+• [M2+(X-)2 = I] was detected by the one-electron reduction of M2+ ion. When the alkyl was >C5, a characteristic peak of C4H8Br+ was found from the bromide complexes. A peak corresponding to (M-2)+•, representing loss of HX from MX2, was also found. A base peak corresponding to (M-R-R1)+• was observed with smaller alkyl groups. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Formula: C16H22Br2N2

The Article related to mass spectra dialylbipyridinium dihalide, alkylbipyridinium halide mass spectra, bipyridinium halide mass spectra, Physical Organic Chemistry: Degradation Reactions, Including Mass Spectral Fragmentation and other aspects.Formula: C16H22Br2N2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Fernandez-Salas, Jose A.; Manzini, Simone; Piola, Lorenzo; Slawin, Alexandra M. Z.; Nolan, Steven P. published an article in 2014, the title of the article was Ruthenium catalysed C-H bond borylation.Synthetic Route of 1349171-28-3 And the article contains the following content:

An easily prepared series of phenylindenyldihydridosilyl ruthenium complexes (2a-2d) was obtained by reaction of tertiary silanes with the com.-available [RuCl(3-phenylindenyl)(PPh3)2] (1). The [RuH2(3-phenylindenyl)(SiEt3)] (2a) complex was shown to be highly efficient (1.5 mol%) in the ortho-selective borylation of pyridyl substrates, with yields of up to 90%. A novel ruthenium(IV)-catalyzed C-H activation borylation/functionalization reaction using a remarkably low catalyst loadings is described. The experimental process involved the reaction of 2-(2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pyridine(cas: 1349171-28-3).Synthetic Route of 1349171-28-3

The Article related to phenylindenyldihydridosilyl ruthenium complex preparation catalyst borylation, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.Synthetic Route of 1349171-28-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On November 1, 1992, Schmuelling, M.; Ryabov, A. D.; Van Eldik, R. published an article.Computed Properties of 636-73-7 The title of the article was Steric and electronic tuning of the lability of square planar d8 metal complexes: platinum(II) ≡ palladium(II). And the article contained the following:

Electronic tuning of PtII complexes via cyclometalation, i.e. the introduction of a Pt-C bond trans to the leaving ligand, can increase their lability to that of related PdII complexes. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Computed Properties of 636-73-7

The Article related to ortho platinated aminomethylphenyl preparation substitution kinetics, platinum square planar aminomethylphenyl substitution kinetics, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.Computed Properties of 636-73-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On December 7, 2000, Davenport, Adam J.; Davies, David L.; Fawcett, John; Garratt, Shaun A.; Russell, David R. published an article.Quality Control of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine The title of the article was Arene ruthenium complexes with pyridyloxazolines: synthesis and applications as asymmetric catalysts for Diels-Alder reactions. And the article contained the following:

Reaction of the dimers [RuCl2(arene)]2 (arene = mesitylene, p-cymene, benzene, C6Me6) with pyridyloxazolines (pymox) gave complexes [RuCl(pymox)(arene)][SbF6] which have been fully characterized. Using chiral ligands diastereomers are formed, the diastereoselectivity depending on the substituents on the arene and on the oxazoline. The complexes [RuCl(Me2-pymox)(mes)][SbF6], [RuCl(Ph-pymox)(mes)][SbF6], [RuCl(iPr-pymox)(mes)][SbF6] and [RuCl(indanyl-pymox)(mes)][SbF6] (mes = mesitylene) have been characterized by x-ray crystallog. Treatment of these cations with AgSbF6 generates dications which in some cases can be isolated as aqua species [Ru(OH2)(pymox)(arene)]2+; these dications are enantioselective catalysts for Diels-Alder reactions of acroleins and dienes; a mechanism is proposed which accounts for the observed enantioselectivity. The experimental process involved the reaction of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine(cas: 109660-12-0).Quality Control of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine

The Article related to arene ruthenium pyridyloxazoline preparation asym catalyst diels alder, crystal mol structure arene ruthenium pyridyloxazoline complex, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.Quality Control of 2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)pyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On March 12, 2007, Korthals, Brigitte; Goettker-Schnetmann, Inigo; Mecking, Stefan published an article.Quality Control of Pyridine-3-sulfonic acid The title of the article was Nickel(II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-κ2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems. And the article contained the following:

Neutral (salicylaldiminato)nickel(II) Me complexes [{6-C(H):NAr-2,4-I2C6H2O-κ2N,O}NiMe(L)] (Ar = 2,6-{3,5-(F3C)2C6H3}2C6H3) with different water-soluble ligands L (2a, L = 1,3,5-triaza-7-phosphaadamantane; 2b, L = hexamethylenetetramine (urotropine); 2c, L = tetraethylammonium pyridine-3-sulfonate; 2d, L = amino-terminated poly(ethylene glycol) monomethoxy ether) were prepared 2A-d are potentially water-soluble catalyst precursors for ethylene polymerization, which form a water-insoluble active site [{κ2-N,O}NiR(ethylene)] (R = growing chain). Only complex 2d was water-soluble (>2 mmol L-1); 2c is soluble in water/2-propanol mixtures In toluene as a reaction medium, only the relatively weakly coordinated tertiary amine complex 2b is polymerization active (1.7 × 104 TO). In aqueous systems 2c,d are also active due to compartmentalization of the active site in the polymer particles and of L in the aqueous phase. Polyethylene particle sizes vary from 18 nm (dispersions formed with 2d) to over 0.5 μm (2c) to suspensions (2b) depending on the initial state of the reaction mixture, correlated with catalyst solubility 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 salicylaldiminato nickel methyl water soluble ligand complex preparation catalyst, polymerization catalyst salicylaldiminato nickel methyl water soluble ligand complex, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.Quality Control of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On June 10, 2021, Bartolome-Nebreda, Jose Manuel; Trabanco-Suarez, Andres Avelino; De Lucas Olivares, Ana Isabel published a patent.Related Products of 1227595-34-7 The title of the patent was Synthesis of heterocyclic Oga inhibitors treating tauopathies, in particular Alzheimer’s and Parkinson’s diseases. And the patent contained the following:

The present invention relates to O-GlcNAc hydrolase (OGA) inhibitors I, tautomers, or stereoisomers such that Ra can be a six- or five-membered heteroaryl ring system or nine, ten membered bicyclic heterocyclic ring; L is selected from O, OCH2, or CH2O; R1a-b an R2a-b are independently H, Me or (un)substituted C1-3 alkyl; R is H or methyl; Rb can be a bicyclic heteroaryl ring systems are prepared as pharmaceutically acceptable salts and solvates. Of note, II was prepared for the prevention and treatment of disorders in which inhibition of OGA is beneficial, such as tauopathies, in particular Alzheimer’s disease or progressive supranuclear palsy; and neurodegenerative diseases accompanied by a tau pathol., in particular amyotrophic lateral sclerosis or frontotemporal lobe dementia caused by C9ORF72 mutations; or alpha synucleinopathies, in particular Parkinson’s disease, dementia due to Parkinson’s (or neurocognitive disorder due to Parkinson’s disease), dementia with Lewy bodies, multiple system atrophy, or alpha synucleinopathy caused by Gaucher’s disease. The experimental process involved the reaction of 4-(Chloromethyl)-2-methoxy-6-methylpyridine(cas: 1227595-34-7).Related Products of 1227595-34-7

The Article related to heterocyclic oga inhibitor preparation alzheimers parkinson tauopathy, Heterocyclic Compounds (More Than One Hetero Atom): Other 6-Membered Rings, Two Hetero Atoms and other aspects.Related Products of 1227595-34-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On May 20, 2019, Kim, Jae Hyeon; Kim, Gi Han; Kim, Chung Hyo published a patent.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide The title of the patent was Light control device and transparent display device including the same. And the patent contained the following:

The present invention relates to a light control device capable of realizing a fast response speed, and a transparent display device including the same. The light control device includes a first substrate and a second substrate facing each other, a first barrier rib and a second barrier rib that maintain a gap between the first substrate and the second substrate, and disposed between the first substrate and the second substrate, a first electrode disposed on a side surface of the first bulk head and facing the second bulkhead; a second electrode disposed on a side surface of the second bulk head facing the first bulk head and a light control cell changing the light transmittance according to the voltage applied to the first electrode and the second electrode including electrochromic materials, and disposed between the first electrode and the second electrode. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to light control transparent display device, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Other and other aspects.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kamogawa, Hiroyoshi; Amemiya, Suguru published an article in 1984, the title of the article was Synthesis of novel organic functional substances. II. Spontaneous generation of viologen radical cations in polar aprotic solvents.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide And the article contains the following content:

Viologens, when dissolved in polar aprotic solvents (such as N-methyl-2-pyrrolidone or HMPA) under deaerated conditions, gave a blue color (λmax = 608-609nm) indicating the spontaneous generation of the viologen radical cation. Electron transfer from the counter anion of viologen to the viologen cation was proposed. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to viologen electron transfer solvent effect, Physical Organic Chemistry: Oxidation-Reduction, Including Dehydrogenation and Hydrogenolysis and other aspects.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On June 5, 1988, Shosenji, Hideto; Nakano, Yasuhiro; Yamada, Kimiho published an article.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide The title of the article was Catalytic reduction of diphenylacetylene by zinc over palladium-carbon using viologens as electron mediators. And the article contained the following:

PhCCPh was reduced over Pd/C in methanol-water in presence of zinc using N,N’-dialkyl-4,4′-bipyridinium ions (viologens) as mediators to give cis-stilbene as the major product and bibenzyl as the minor one. The reaction involved direct contact of zinc with the catalyst and electron transfer from zinc to Pd via the viologen. The Pd- reduced a proton from H2O to generate H. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to reduction diphenylacetylene zinc viologen palladium, Physical Organic Chemistry: Oxidation-Reduction, Including Dehydrogenation and Hydrogenolysis and other aspects.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On January 16, 2002, Horikiri, Tomonari published a patent.HPLC of Formula: 75449-26-2 The title of the patent was Liquid crystal composition and liquid crystal device and liquid crystal apparatus including the composition. And the patent contained the following:

A liquid crystal composition is principally constituted by at least a liquid crystal and a gel-forming compound forming a gel with the liquid crystal. The gel-forming compound has a discotic liquid crystal phase and has a property of assuming a supermol. structure when it is in mixture with the liquid crystal. The supermol. structure may preferably have at least one intermol. interacting side having at least one -CONH- group allowing multidimensional intermol. interaction. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).HPLC of Formula: 75449-26-2

The Article related to liquid crystal display gelation agent intermol hydrogen bond, Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes: Other and other aspects.HPLC of Formula: 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem