148-24-3Relevant articles and documents
Hydrolysis of 8-quinolyl phosphate monoester: Kinetic and theoretical studies of the effect of lanthanide ions
Souza, Bruno S.,Brandao, Tiago A. S.,Orth, Elisa S.,Roma, Ana C.,Longo, Ricardo L.,Bunton, Clifford A.,Nome, Faruk
, p. 1042 - 1053 (2009)
8-Quinolyl phosphate (8QP) in the presence of the trivalent lanthanide ions (Ln = La, Sm, Eu, Tb, and Er) forms a [Ln ? 8QP]+ complex where the lanthanide ion catalyzes hydrolysis of 8QP. In reactions with Tb 3+ or Er3+, t
(AEDPH3)·(8-OQH)·(H2O): A yellow supramolecular plaster with ammonia adsorption and ammonia-induced discoloration properties
Tian, Di,Xiong, Juan,Liang, Xi-Chao,Deng, Jing,Yuan, Liang-Jie,Chen, Shuo-Ping
, p. 2732 - 2737 (2014)
A novel supramolecular plaster, namely (AEDPH3)·(8-OQH) ·(H2O) (1), is synthesized and characterized. This plaster is an organic acid-base compound, which shows a three-dimensional (3D) sandwich-type supramolecular network. It is a yellow gelling material with excellent mechanical properties superior to that of gypsum plaster. Moreover, the plaster can adsorb ammonia (NH3) effectively, and exhibits an interesting ammonia-induced discoloration property.
Photolysis of Zn(8-quinolinolate)2(H2O)2 in non-aqueous solution. Photoactivation of hydrolysis
Vogler, Arnd
, p. 82 - 83 (2014)
The octahedral complex Zn(8-quinolinolate)2(H2O) 2 in non-aqueous solvents (e.g. chloroform, cyclohexane) undergoes a photolysis: Zn(8-quinolinolate)2(H2O)2 → Zn(OH)2 + 2 8-quinolinole. It is suggested that this photohydrolysis is facilitated by hydrogen bonding. The irradiation (λ > 340 nm) is absorbed by the ligand chromophore. The IL excitation is associated with a charge shift from the coordinated phenolate to the nitrogen of the pyridine ring. As a consequence, the phenolate loses its coordinating ability. The subsequent deactivation is accompanied by the reversal of the charge shift. The regenerated phenolate may now undergo protonation from an adjacent water ligand in competition with the re-coordination to Zn2 +. This system represents a simple model for activation of water which is coordinated to zinc(II). In distinction to the enzymatic function the hydrolysis in our system is initiated by a light switch.
Photodegradation of quinoline in water
Kochany, Jan,Maguire, R. James
, p. 1097 - 1110 (1994)
The photodegradation kinetics of quinoline have been studied at 313 nm and in sunlight in organic-free water, lake water, and water containing several different solutes. The half-life of sunlight photodegradation is slightly shorter in lake water than in organic-free water (4-8%, depending upon the season). In near-surface lake water at 40° N latitude in summer, quinoline was predicted to degrade readily in sunlight, with a half-life of about 14 calendar days. The calculated half-life in winter was about 123 calendar days. The photodegradation of quinoline was accelerated significantly by NaNO3 and dissolved organic matter, two effective producers of hydroxyl radicals in aquatic environments. The rate was also faster at pH 4.5 than at pH 7.0. Two photoproducts were identified in low yield, 2-hydroxyquinoline and 8-hydroxyquinoline; prolonged irradiation appeared to destroy the aromatic nucleus.
A prochelator with a modular masking group featuring hydrogen peroxide activation with concurrent fluorescent reporting
Franks, Andrew T.,Franz, Katherine J.
, p. 11317 - 11320 (2014)
Metal chelators masked with protecting groups for targeted release have the potential to conditionally modulate cellular metals. We report a new route to prepare cis-cinnamate protecting groups that enabled development of a prochelator with chemical stimulus response, fluorescent reporting and active compound release in a single structure. the Partner Organisations 2014.
Effect of Poly(diallyldimethylammonium Chloride) and of Poly(ethyleneimine) on the Esterolysis of 8-Acetoxyquinoline
Arcelli, Antonio,Concilio, Carlo
, p. 1327 - 1331 (1983)
The esterolysis of 8-acetoquinoline (8-AQ) in aqueous solution in the presence of an excess of poly(diallyldimethylammonium chloride) (PDDA) or poly(ethylenimine) (PEI) was investigated at 30 deg C.In the presence of PDDA hydrolysis takes place and the polyion does not affect the rate of the reaction.In the presence of PEI the ester undergoes aminolysis and saturation kinetics are observed.The pH dependence of kobs, the apparent first-order rate constant of esterolysis, can be explained on the basis of the pH dependence of pKapp and the degree of ionization of PEI.A Broensted relationship has already been found for the aminolysis of 8-AQ with primary and secondary amines of low molecular weight.By extending the relationship to the reaction between the polymeric amino groups in PEI and 8-AQ, we can quantitatively predict the pH dependence of kobs under saturation conditions, provided that the proper values of pKapp of the amino groups are considered.
Synthesis of quinolines by iron-catalyzed reaction of anilines with propane-1,3-diol
Khusnutdinov,Bayguzina,Aminov
, p. 2725 - 2727 (2015)
Quinoline and its derivatives were synthesized by cyclocondensation of anilines with propane-1,3-diol in 57-96% yield in the presence of iron-containing catalysts in carbon tetrachloride.
Solid-state structural transformations of two AgI supramolecular polymorphs to another polymer upon absorption of HNO3 vapors
Akhbari, Kamran,Morsali, Ali
, p. 2787 - 2789 (2013)
Solid-state structural transformation of two polymorphic forms of [Ag(8-HqH)(8-Hq)]n (1α and 1β, where 8-HqH = 8-hydroxyquinoline and 8-Hq- = 8-hydroxyquinolate) to {[Ag(8-HqH)2]NO3}n (2) has been observed upon solid-gas reaction of compounds 1α and 1β with HNO3 vapors. Solid-gas reaction of compound 2 with hydrated vapors of NH3 results in the formation of only the 1β polymorph, while solid-solid reaction of compound 2 with KOH results in the formation of a 1α and 1β mixture with chiral and achiral space groups of P212 121 and Pbcn, respectively.
A prochelator activated by hydrogen peroxide prevents metal-induced amyloid β aggregation
Dickens, Marina G.,Franz, Katherine J.
, p. 59 - 62 (2010)
(Chemical Equation Presented) The masked marvel: Elevated production of H2O2 by deviant species of Cu-Aβ (Cu-amyloid beta) might trigger neurodegeneration in Alzheimer's disease. A new boronic ester-masked prochelator called QBP is activated under conditions that mimic early Alzheimer's pathology in which copper, Aβ, and reductants exacerbate reactive oxygen species formation. Once activated to its unmasked form, the released chelator diminishes copper's pro-oxidant reactivity and inhibits Aβ aggregation.
Properties and infrared spectra in the potassium bromide region of 8-quinolinol and its metal chelates
Tackett, James E.,Sawyer, Donald T.
, p. 692 - 696 (1964)
The infrared absorption spectra in the 11-25 μ region of 8-quinolinol and the 8-quinolinol chelates of the alkaline earth ions, manganese(II), cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II), lead(II), aluminum(III), iron(III), thorium(IV), and uranium(Vl) have been recorded and band assignments have been made. A consideration of the spectral shifts has been used to study the structures of the divalent metal chelates in the solid phase. The spectral data indicate that the divalent ions which have available d-orbitals bond differently with 8-quinolinol from those without available d-orbitals. The solvate oxine in the thorium(IV) and uranium(VI) chelates is not distinguishable from the ligand oxines on the basis of the infrared data. Structures for the a and β forms of copper oxinate are proposed.
