Category: 1127-45-3

Application of 1127-45-3. 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 Synthesis of a new chiral selector base on pracoterol for chiral stationary phase. Author is Zhang, Yiwen; Zeng, Hao; Yao, Shun; Song, Hang.

According to the chiral resolution mechanism and structures of Pirkle’s chiral stationary phase (CSP), a new amide chiral selector base on pracoterol was prepared in this thesis. To get a better yield, all the conditions and purification conditions of the reactions were studied, and the key products were characterized by HPLC, FTIR and 1H NMR. This chiral selector may be developed as chiral selector of CSP.

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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Novel spiroborates and a dipole moment study of 1,3,2 dioxaboraazulene-2-spiro-2′-(1′,3′,2′-benzodioxaborole)》. Authors are Balaban, A. T.; Bally, Ioana; Bishop, R. J.; Rentea, C. N.; Sutton, L. E..The article about the compound:8-Hydroxyquinoline 1-oxidecas:1127-45-3,SMILESS:OC1=CC=CC2=CC=C[N+]([O-])=C12).Application of 1127-45-3. Through the article, more information about this compound (cas:1127-45-3) is conveyed.

The large dipole moment (8.24 D.) of 5(7)-methyl-1,3,2-dioxaboraazulene-2-spiro-2′-(1′,3′,2′-benzodioxaborole) (I) confirms the spiran co-ordinated structure previously suggested. Stable spiroborates are formed from butoxy-benzodioxaborole with 8-hydroxyquinoline or its N-oxide, but not with 3-hydroxy-γ-pyrone.

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Name: 8-Hydroxyquinoline 1-oxide. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Structures of pyridine and quinoline-N-oxide. Author is Desiderato, Robert; Terry, J. C..

8-Hydroxyquinoline 1-oxide (I) and 2-(hydroxymethyl)pyridine 1-oxide (II) exhibited lengthened N-O bond distances (1.333 and 1.332 Å) due to delocalization of the nonbonding electron on the O as a result of H bonding. The H bond between the hydroxyl H and the dative O is intramol. (1.42 Å long) in I and intermol. in II (1.99 Å long). The pyridine and quinoline moieties are planar. Crystals have monoclinic symmetry, space group P21/c, and Z = 4. Compound, lattice constants a, b, c, and cos. β are: I, 12.136, 4.921, 13.138 Å, -0.3376; II, 7.079, 8.046, 10.599 Å, -0.2254.

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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 Determination and comparison of the stability constants of some metal complexes of 8-hydroxyquinoline N-oxide and 8-hydroxyquinoline, published in 1970, which mentions a compound: 1127-45-3, Name is 8-Hydroxyquinoline 1-oxide, Molecular C9H7NO2, Safety of 8-Hydroxyquinoline 1-oxide.

The stability constant of 8-hydroxyquinoline 1-oxide (or “”oxine N-oxide””) complexes with MnII, FeII, CoII, NiII, CuII, ZnII, CdII, UO2II, AlIII, FeIII, YIII, LaIII, CeIII, PrIII, NdIII, SmIII, GdIII, DyIII, HoIII, ErIII, TmIII, YbIII, and LuIII, and oxine complexes with LnIII and YIII were determined by using pH-metric titrations in 50 volume % aqueous dioxane in the presence of 0.30M NaClO4 as the constant ionic medium. With both the ligands, the “”Gd break”” is observed in the case of the lanthanon (Ln) complexes, whereas the bivalent ion complexes follow the Irving-Williams order of stability constant in the case of the oxine complexes. The stability constant of the oxine complexes were larger than those of the N-oxide complexes, though the oxine anion is only 5 times as basic as the N-oxide anion. A possible explanation for the increased stability of the oxine complexes in comparison with the corresponding N-oxide derivative is proposed.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Oxine N-oxide as an analytical reagent for the colorimetric estimation of Ce(IV) and its comparison with 8-quinolinol as a chelating agent》. Authors are Bhat, A. N.; Jain, B. D..The article about the compound:8-Hydroxyquinoline 1-oxidecas:1127-45-3,SMILESS:OC1=CC=CC2=CC=C[N+]([O-])=C12).Formula: C9H7NO2. Through the article, more information about this compound (cas:1127-45-3) is conveyed.

Aqueous solutions of Ce(IV) salts form stable brownish red H2O-soluble complexes when combined with alc. oxine N-oxide. The absorption is measured at 420 mμ, and Beer’s law is obeyed to 9.0 p.p.m. Ce. Th, U, and F- interfere and must be removed.

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Recommanded Product: 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 Lanthanide and actinide complexes with bidentate ligands. Crystal structure of dimethylformamidetetrakis(1-oxo-2-thiopyridinato)thorium(IV). Author is Casellato, U.; Sitran, S.; Tamburini, S.; Vigato, P. A.; Graziani, R..

UO2L2L’.xL’ (HL = 2-hydroxypyridine-N-oxide, 2-mercaptopyridine-N-oxide (I), 8-hydroxyquinoline-N-oxide, L’ = H2O, MeOH, Ph3PO, DMSO, Me2NAc, DMF, x = 0, 1), ThL4.xL1, ThL4L1.xL1, LaL3.xL1, and Li[LaL4].xL1 were prepared Crystals of ThL4(DMF) (HL = I), are orthorhombic, space group P212121, with a 10.514(6), b 11.024(7), c 24.56(1) Å, and d.(calculated) = 1.88 g cm-3 for Z = 4. The final conventional R was 0.056 based on the 2354 observed reflections. Four bidentate ligands and 1 DMF are bonded to Th to form a distorted monocapped square antiprismatic coordination polyhedron. The Th-S distances are 2.94-2.99 Å (mean 2.97 Å). The Th-O bond distance of 2.52 Å to DMF is significantly longer than the 4 Th-O(pyOS) bond distances (mean 2.40 Å).

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 8-Hydroxyquinoline 1-oxide(SMILESS: OC1=CC=CC2=CC=C[N+]([O-])=C12,cas:1127-45-3) is researched.SDS of cas: 34941-92-9. The article 《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》 in relation to this compound, is published in Plant and Cell Physiology. Let’s take a look at the latest research on this compound (cas:1127-45-3).

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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Yavari, Issa; Roberts, John D. published the article 《Nitrogen-15 nuclear magnetic resonance spectroscopy. Pyridine N-oxides and quinoline N-oxides》. Keywords: nitrogen NMR pyridine oxide; quinoline oxide nitrogen NMR; carbon NMR pyridine quinoline oxide; spin coupling nitrogen pyridine oxide.They researched the compound: 8-Hydroxyquinoline 1-oxide( cas:1127-45-3 ).Application of 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.

Noise-decoupled, natural-abundance 15N NMR spectra are reported for 10 pyridine N-oxides and 2 quinoline N-oxides. C-4 substituents on pyridine oxides which are capable of resonance interaction with the N-O moiety, gave fairly large shifts in the expected directions. Chem. shifts determined in DMSO are 5-20 ppm and 33-55 ppm downfield from those in CF3CH2OH and CF3CO2H, resp. Solvent effects are discussed in terms of H bonding and protonation of the N-oxide O atom. 13C chem. shifts and 1-bond C-H coupling constants of some substituted pyridine N-oxides are reported and discussed.

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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, Latvijas PSR Zinatnu Akademijas Vestis, Kimijas Serija called 8-Hydroxyquinophthalone derivatives, Author is Kacens, J.; Cebure, A.; Neilands, O., the main research direction is hydroxyquinonaphthalone; quinophthalone hydroxy.Recommanded Product: 8-Hydroxyquinoline 1-oxide.

8-Acetoxyquinophthalone (I, R = Ac, X = H) (II) was prepared in 62% yield by reaction of 8-quinolinol oxide with 1,3-indandione in Ac2O. Analogously prepared was I (R = Ac, X = Cl) in 62% yield. Hydrolysis of the acetate gave the corresponding alcs. (I, R = H, (Cl). Treatment of II with SO2Cl2 gave indandione (III, X = H). Analogously III (X = C) was obtained.

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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 Mixed ligand complexes of copper glycinate with oxine, its derivatives and oxine-N-oxide, published in 2005, which mentions a compound: 1127-45-3, mainly applied to copper glycinate hydroxyquinoline oxide complex preparation, Product Details of 1127-45-3.

Mixed ligand complexes CuL2.L’ (HL = glycine, L’ = oxine or 8-hydroxyquinoline, 5,7-dichlorooxine, 5,7-dibromooxine, 5,7-diiodooxine, 5,7-dinitrooxine and oxine-N-oxide) were prepared by the reaction of Cu(II) glycinate with oxine, its derivatives and oxine-N-oxide. IR spectral datas indicate coordination of glycine is through the N and O atoms in neutral complex (Cu glycinate). It also indicates H-bonding in them, coordination of L’ through the OH and heterocyclic N atoms. The UV-spectroscopy and magnetic susceptibility values suggest the octahedral structure for these complexes. Very low values of molar conductivity show they are nonelectrolytes.

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