Month: November 2022

On September 5, 1980, Kamogawa, Hiroyoshi; Masui, Toshiaki; Nanasawa, Masato published an article.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide The title of the article was Photochemically induced reduction of viologens in solid polar aprotic polymer matrices. And the article contained the following:

Photochem. induced reversible reduction of viologens in solid polar aprotic polymer matrixes proceeds much more efficiently than in protic ones. The effects of the N-substituent and anions were discussed. 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 photochem reduction viologen polymer matrix, substituent effect viologen photoreduction, Physical Organic Chemistry: Oxidation-Reduction Reactions (Including Hydrogenation) and other aspects.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On August 1, 2012, Wang, Wei; Yu, Wei; Yan, Yukun; Li, Jing; Li, Qiuyue published a patent.Computed Properties of 52243-87-5 The title of the patent was Organic micro-/nano-material of 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt/viologen derivative charge transfer composite and preparation method thereof. And the patent contained the following:

The organic micro-/nano-material consists of organic electron donor 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt and organic electron acceptor viologen derivative The organic micro-/nano-material is prepared by: dissolving organic electron donor 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt and organic electron acceptor viologen derivative in good solvent, adding poor solvent; constant temperature aging the solution, slowly volatilizing the good solvent, obtaining organic micro-/nano-material single crystal. The organic micro-/nano-material is also prepared by: dissolving organic electron donor 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt in solvent I, slowly adding buffer solution, enriching the organic electron donor in the solvent I; dissolving the electron acceptor viologen derivative in solvent II, slowly adding the solution to the organic electron donor 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt solution, enriching the organic electron donor 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt in the solvent II, standing and aging, obtaining organic micro-/nano-material single crystal at the solvent interface. The invention has the advantages of easy raw material resource, simple preparation process, good crystallization property; and has wide application prospects in organic semiconductor or organic conductor etc. fields. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Computed Properties of 52243-87-5

The Article related to organic micro material pyrenetetrasulfonic acid tetrasodium salt viologen, crystal mol structure viologen pyrenetetrasulfonate sodium salt, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Luminescence and other aspects.Computed Properties of 52243-87-5

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On May 23, 2013, Wang, Yansong; Kirschner, Alexander; Fabian, Anne-Katrin; Gopalakrishnan, Ranganath; Kress, Christoph; Hoogeland, Bastiaan; Koch, Uwe; Kozany, Christian; Bracher, Andreas; Hausch, Felix published an article.Formula: C9H8N2O2 The title of the article was Increasing the Efficiency of Ligands for FK506-Binding Protein 51 by Conformational Control. And the article contained the following:

The design of efficient ligands remains a key challenge in drug discovery. In the quest for lead-like ligands for the FK506-binding protein 51 (FKBP51), we designed two new classes of bicyclic sulfonamides to probe the contribution of conformational energy in these ligands. The [4.3.1] scaffold had consistently higher affinity compared to the [3.3.1] or monocyclic scaffolds, which could be attributed to better preorganization of two key recognition motifs. Surprisingly, the binding of the rigid [4.3.1] scaffold was enthalpy-driven and entropically disfavored compared to the flexible analogs. Cocrystal structures at at. resolution revealed that the sulfonamide nitrogen in the bicyclic scaffolds can accept an unusual hydrogen bond from Tyr113 that mimics the putative FKBP transition state. This resulted in the first lead-like, functionally active ligand for FKBP51. Our work exemplifies how atom-efficient ligands can be achieved by careful conformational control even in very open and thus difficult binding sites such as FKBP51. The experimental process involved the reaction of Ethyl 6-cyanopicolinate(cas: 97483-79-9).Formula: C9H8N2O2

The Article related to conformational control ligand fk506 binding protein 51, Heterocyclic Compounds (More Than One Hetero Atom): Eight- and Higher-Membered Rings and other aspects.Formula: C9H8N2O2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On May 22, 2014, Magda, Darren; Xu, Jide; Butlin, Nathaniel G. published a patent.Product Details of 170235-18-4 The title of the patent was Preparation of di-macrocycles and their complexes for use in therapeutics and diagnostic applications. And the patent contained the following:

The invention relates to chem. compounds of formula I and complexes that can be used in therapeutic and diagnostic applications. Compounds of formula I wherein B1, B2, B3 and B4 are independently N, C, B, Si and P; F1 and F2 are independently H, (un)substituted alkyl, (un)substituted heteroaryl, (un)substituted aryl, etc.; L1 – L9 are independently (un)substituted alkyl, (un)substituted heteroalkyl, (un)substituted aryl, etc.; A1, A2, A3 and A4 are independently substituted aryl and (un)substituted heteroaryl; are claimed. Example compound II was prepared by a multistep procedure (procedure given). The invention compounds were evaluated for their metal chelation ability for use in therapeutic and diagnostic application (some data given). The experimental process involved the reaction of Methyl 6-bromo-5-methoxypicolinate(cas: 170235-18-4).Product Details of 170235-18-4

The Article related to dimacrocycle preparation complex therapeutic and diagnostic application, Heterocyclic Compounds (More Than One Hetero Atom): Eight- and Higher-Membered Rings and other aspects.Product Details of 170235-18-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On October 31, 1977, Mulvaney, R. L.; Bremner, J. M. published an article.Name: Pyridine-3-sulfonic acid The title of the article was Evaluation of antimetabolites for retardation of urea hydrolysis in soils. And the article contained the following:

Studies to evaluate 3 antimetabolites patented as inhibitors of urea [57-13-6] hydrolysis in soils (pyridine-3-sulfonic acid [636-73-7], desthiobiotin [533-48-2] and oxythiamine chloride [582-36-5]) showed that they had no effect on production of urease [9002-13-5] by soil microorganisms and did not retard urea hydrolysis in soils or reduce gaseous loss of urea N as NH3, even when applied at rates far exceeding those recommended for inhibition of urea hydrolysis. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Name: Pyridine-3-sulfonic acid

The Article related to soil urea hydrolysis antimetabolite, Fertilizers, Soils, and Plant Nutrition: Fertilizer-Soil Relations, Including Amendments and other aspects.Name: Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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