Category: 1127-45-3

Safety of 8-Hydroxyquinoline 1-oxide. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Light-induced changes in the fluorescence yield of chlorophyll α in Anacystis nidulans II. Fast changes and the effect of photosynthetic inhibitors on both the fast and slow fluorescence induction. Author is Mohanty, Prasanna; Govindjee.

The intensity dependence and spectral variations during the fast transient of chlorophyll a fluorescence were analyzed in a blue-green alga, A. nidulans. A prolonged dark adaptation and relatively high intensity of exciting illumination were required to evoke DPS (dip-peak-quasi steady state) type fluorescence yield fluctuations in Anacystis. At low to moderate intensities of exciting light, the time for the development of P depended on light intensities, but for M (maximum level), this remained constant at these intensities. Fluorescence emission was heterogeneous during the induction period. The P and M levels were relatively enriched in short-wave length system II chlorophyll a emission compared to D and S levels. The fast DPS transient was affected by an electron transport cofactor (methyl viologen) and inhibitors (e.g., DCMU [3-(3,4-dichlorophenyl)-1,1-dimethylurea], NH2OH) in a manner suggesting that these changes are mostly related to the oxidation-reduction level of intermediates between the 2 photosystems. The slow SM changes in fluorescence yield paralleled O evolution and were resistant to various electron transport inhibitors (o-phenanthroline, 8-hydroxyquinoline 1-oxide, salicylaldoxime, DCMU, NH2OH, and antimycin a). It appears that in Anacystis a net electron transport-supported oxidation-reduction state of the quencher regulates only partially the development of the DPS transient of the fluorescence yield but the development of the slow fluorescence yield changes may not be regulated by these reactions. The slow rise in the yield may be induced by a structural modification of the thylakoid membrane.

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Application In Synthesis of 8-Hydroxyquinoline 1-oxide. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Oxidation of 1-naphthol and related phenols with hydrogen peroxide and potassium superoxide catalyzed by 5,10,15,20-tetraarylporphyrinatoiron(III) chlorides in different reaction conditions. Author is Chauhan, S. M. S.; Kalra, Bhanu; Mohapatra, P. P..

Reaction of 1-naphthol and related phenols with hydrogen peroxide catalyzed by 5,10,15,20-tetra(pentafluorophenyl)porphyrinatoiron(III) chloride gives quinones and oxidative coupling products, whereas the reaction of naphthols with hydrogen peroxide catalyzed by 5,10,15,20-tetramesitylporphyrinatoiron(III) chloride gives the above products along with quinone epoxides in moderate yields. The reaction of quinone with potassium superoxide catalyzed by Me12TPPFe(III)Cl and p-MeOTPPFe(III)Cl give higher yields of quinone epoxides than the reaction of quinone with hydrogen peroxide catalyzed by 5,10,15,20-tetraarylporphyrinatoiron(III) chlorides.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Tracer studies on the extraction of metal ions. III. Extraction of manganese(II), iron(III), cobalt(II), copper(II), and zinc(II) with 8-hydroxyquinoline N-oxide》. Authors are Mikulski, J..The article about the compound:8-Hydroxyquinoline 1-oxidecas:1127-45-3,SMILESS:OC1=CC=CC2=CC=C[N+]([O-])=C12).Safety of 8-Hydroxyquinoline 1-oxide. Through the article, more information about this compound (cas:1127-45-3) is conveyed.

8-Hydroxyquinoline N-oxide extract less Mn(II), Fe(III), and Co(II) than does 8-hydroxyquinoline, and the extraction takes place in a lower pH range. Zn was not extracted at all. The tracers were 54Mn, 59Fe, 60Co, 64Cu, and 65Zn. Cf. CA 60, 11569a.

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Pu, Ling-xiang; Xiao, Rong; Zhang, Yi-wen; Song, Hang published the article 《Process improvement on the synthesis of 5-(2-bromobutylacyl)-8-hydroxy quinolone》. Keywords: bromobutylacyl hydroxy quinolone synthesis.They researched the compound: 8-Hydroxyquinoline 1-oxide( cas:1127-45-3 ).HPLC of Formula: 1127-45-3. 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:1127-45-3) here.

5-(2-Bromobutylacyl)-8-hydroxy quinolone in total yield of 49% was synthesized by a four-step reaction of oxidation, acetylation, hydrolysis and Friedel-Crafts acylation from 8-hydroxy quinolone. The structure was confirmed by 1H NMR, 13C NMR and IR.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Heterocyclic N-oxides. V. Substitution reactions on 8-hydroxyquinoline 1-oxide, published in 1968, which mentions a compound: 1127-45-3, Name is 8-Hydroxyquinoline 1-oxide, Molecular C9H7NO2, Recommanded Product: 1127-45-3.

Nitration and halogenation of 8-hydroxyquinoline 1-oxide (I) having N-oxide and phenolic OH groups, each capable of orienting electrophilic substitution in the different rings, was studied with a view to knowing the relative directive influence of these groups and to screen the compounds obtained for bacteriostatic and fungistatic activity. Halogenation afforded under usual conditions products by substitution only in the benzene ring. Thus, 1.5 ml. SO2Cl2 in 10 ml. CHCl3 was added dropwise to a stirred solution of 0.8 g. I in 10 ml. CHCl3 at <5° to yield 0.92 g. 5,7-dichloro-8-hydroxyquinoline 1-oxide (II) as H2O-insoluble fraction (aqueous solution A), m. 203-4° (HOAc). Deoxygenation of II with PCl3 afforded 5,7-dichloro-8-hydroxyquinoline, m. 176°. The aqueous solution (A) on cooling yielded 0.07 g. 5-chloro-8-hydroxyquinoline 1-oxide, m. 169-70°. Similarly, bromination of 0.8 g. I in 10 ml. HOAc with 1 ml. Br in 10 ml. HOAc yielded 1.42 g. of the dibromo compound, m. 198-200° (HOAc), which on deoxygenation yielded 5,7-dibromo-8-hydroxyquinoline, m. 195°. Nitration of 0.8 g. I in 10 ml. HOAc with 2 ml. fuming HNO3 (d. 1.5) initially at room temperature and then 1 hr. at 70-80° (water-bath) yielded 0.8 g. 5,7-dinitro-8-hydroxyquinoline 1-oxide (III), m. 213-14° (HOAc). Nitration of 0.8 g. I in 10 ml. HOAc with 0.7 ml. concentrated HNO3 (d. 1.42) at <20° for 1 hr. yielded 0.75 g. 5-nitro-8-hydroxyquinoline 1-oxide (IV), m. 191-3° (EtOH). The structure of III and IV were established through deoxygenation and comparison with the known 5-nitro and 5,7-dinitro-8-hydroxyquinolines. The phenolic hydroxyl exerts greater influence than the N-oxide function. The usual 5,7-disubstituted derivatives of 8-hydroxyquinoline, 5,7-dihalo- or the 5,7-dinitro compounds were resistant to N-oxidation either by 30% H2O2-HOAc or BzO2H. If you want to learn more about this compound(8-Hydroxyquinoline 1-oxide)Recommanded Product: 1127-45-3, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(1127-45-3).

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Influence of solvents on intramolecular hydrogen bonds with large proton polarizability, published in 1982-07-31, which mentions a compound: 1127-45-3, mainly applied to hydrogen bond intramol NMR; proton polarizability hydrogen bond NMR, Synthetic Route of C9H7NO2.

A large number of compounds with intramol. hydrogen bonds with great proton polarizability were studied by 1H NMR in solvents of various polarities. With the homoconjugated hydrogen bonds, small changes of the chem. shift of the hydrogen-bonded proton are observed with increasing polarity of the solvent, whereby the signal shifts toward lower field. This effect is explained by increasing removal of the counterions from the homoconjugated hydrogen bonds and thus, by decreasing induced dipole interaction of the counterions and the hydrogen bonds with great proton polarizability. In the case of heteroconjugated hydrogen bonds analogous but much greater shifts are observed They are explained by a shift of the OH···N ⇌ O-···H+N equilibrium to the right-hand side with increasing polarity of the solvent. With hydrogen bonds showing no great proton polarizability these effects do not occur.

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Name: 8-Hydroxyquinoline 1-oxide. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about 8-Hydroxyquinolines are bactericidal against Mycobacterium tuberculosis. Author is Odingo, Joshua O.; Early, Julie V.; Smith, Jake; Johnson, James; Bailey, Mai A.; Files, Megan; Guzman, Junitta; Ollinger, Juliane; Korkegian, Aaron; Kumar, Anuradha; Ovechkina, Yulia; Parish, Tanya.

There is an urgent need for new treatments effective against Mycobacterium tuberculosis, the causative agent of tuberculosis. The 8-hydroxyquinoline series is a privileged scaffold with anticancer, antifungal, and antibacterial activities. We conducted a structure-activity relationship study of the series regarding its antitubercular activity using 26 analogs. The 8-hydroxyquinolines showed good activity against M. tuberculosis, with min. inhibitory concentrations (MIC90) of <5μM for some analogs. Small substitutions at C5 resulted in the most potent activity. Substitutions at C2 generally decreased potency, although a sub-family of 2-styryl-substituted analogs retained activity. Representative compounds demonstrated bactericidal activity against replicating M. tuberculosis with >4 log kill at 10× MIC over 14 days. The majority of the compounds demonstrated cytotoxicity (IC50 of <100μM). Further development of this series as antitubercular agents should address the cytotoxicity liability. However, the 8-hydroxyquinoline series represents a useful tool for chem. genomics to identify novel targets in M. tuberculosis. If you want to learn more about this compound(8-Hydroxyquinoline 1-oxide)Name: 8-Hydroxyquinoline 1-oxide, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(1127-45-3).

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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: 1127-45-3, is researched, SMILESS is OC1=CC=CC2=CC=C[N+]([O-])=C12, Molecular C9H7NO2Journal, Article, Dalton Transactions called High anticancer activity and apoptosis- and autophagy-inducing properties of novel lanthanide(III) complexes bearing 8-hydroxyquinoline-N-oxide and 1,10-phenanthroline, Author is Yang, Yan; Zhou, Zhen; Wei, Zu-Zhuang; Qin, Qi-Pin; Yang, Lin; Liang, Hong, the main research direction is lanthanide hydroxyquinolinenoxide phenanthroline anticancer lung adenocarcinoma.Computed Properties of C9H7NO2.

In the quest for rare earth metal complexes with enhanced cancer chemotherapeutic properties, the discovery of seven lanthanide(III) complexes bearing 8-hydroxyquinoline-N-oxide (NQ) and 1,10-phenanthroline (phen) ligands as potential anticancer drugs is described. Complexes [SmIII(NQ)(phen)(H2O)Cl2] , [EuII(NQ)(phen)(H2O)Cl2] , [GdIII(NQ)(phen)(H2O)Cl2] , [DyIII(NQ)(phen)(H2O)Cl2] , [HoIII(NQ)(phen)(H2O)Cl2] , [ErIII(NQ)(phen)(H2O)Cl2] , and [YbIII(NQ)(phen)(H2O)Cl2] exhibit high antiproliferative activity against cisplatin-resistant A549/DDP cells (IC50 = 0.025-0.097 μM) and low toxicity to normal HL-7702 cells. Moreover, complex [SmIII(NQ)(phen)(H2O)Cl2], and to a lesser extent [YbIII(NQ)(phen)(H2O)Cl2], can upregulate the expression of LC3 and Beclin1 and downregulate p62 to induce apoptosis in cisplatin-resistant A549/DDP cell lines, which is related to the cell autophagy-inducing properties of [SmIII(NQ)(phen)(H2O)Cl2] and [YbIII(NQ)(phen)(H2O)Cl2]. Furthermore, in vivo assays suggest that [SmIII(NQ)(phen)(H2O)Cl2] significantly inhibits A549/DDP xenograft tumor growth (56.5%). These results indicate that lanthanide(III) complex [SmIII(NQ)(phen)(H2O)Cl2] is a promising candidate as an anticancer drug against cisplatin-resistant A549/DDP cells.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Ion-triggered multistate molecular switching device based on regioselective coordination-controlled ion binding, the main research direction is triggered multistate switching device regioselective coordination controlled binding crystallog.Safety of 8-Hydroxyquinoline 1-oxide.

Mol. devices capable of accessing different controlled conformational states, while optically signaling the occupied state, are attractive tools for nanotechnol. since they relate to both areas of mol. mech. devices and logic gates. The authors report here a simple mol. system that allows access to four distinct conformational and optical states. It is based on the regioselective complexation of metal ions to a heterocyclic ligand triad, which is dictated by the accessible coordination geometry and electrostatic properties of two distinct binding subunits. Thus, local conformational switching is brought about by tetrahedral coordination (of CuI) or octahedral coordination (of M2+ ions) to bidentate and tridentate binding subunits, resp. The shape modifications undergone represent an ion-controlled nanomech. device. They give controlled access to four different states that display different physicochem. (e.g. optical) properties and provide a basis for logic gate operations.

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Qiu, Yatao; Liu, Yanghan; Yang, Kai; Hong, Wenkun; Li, Zheng; Wang, Zhaoyang; Yao, Zhiyi; Jiang, Sheng published the article 《New Ligands That Promote Cross-Coupling Reactions between Aryl Halides and Unactivated Arenes》. Keywords: aminoquinolinecarboxylic acid preparation ligand coupling reaction aryl halide arene.They researched the compound: 8-Hydroxyquinoline 1-oxide( cas:1127-45-3 ).Computed Properties of C9H7NO2. 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:1127-45-3) here.

Several ligands were designed to promote transition-metal-free cross-coupling reactions of aryl halides with benzene derivatives Among the systems probed, quinoline-1-amino-2-carboxylic acid was found to serve as an excellent catalyst for cross-coupling between aryl halides and unactivated benzene. Reactions using this inexpensive catalytic system displayed a high functional group tolerance as well as excellent chemoselectivities.

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