84-65-1Relevant academic research and scientific papers
Alcohol oxidation and aldol condensation during base-catalyzed reaction of primary alcohols with 1-chloroanthraquinone
Shabany,Abel,Evans,McRobbie,Gokel
, p. 6705 - 6708 (2000)
When chloroanthraquinone is treated with primary alcohols under basic conditions, the notoriously low yields observed for substitution result in part from oxidation of the alcohol followed by aldol condensation. (C) 2000 Elsevier Science Ltd.
Electron Paramagnetic Resonance, ENDOR and TRIPLE Resonance of some 9,10-Anthraquinol Radicals in Solution
Maekelae, Reijo,Vuolle, Mikko
, p. 3257 - 3260 (1990)
EPR, ENDOR and TRIPLE resonance spectra are recorded for 9,10-anthraquinol-1-sodium sulphonate, 9,10-anthraquinol-2-sodium sulphonate, 9,10-anthraquinol-1,5-disodium sulphonate and 9,10-anthraquinol-2,6-disodium sulphonate cation radicals.The splittings of the 9,10-anthraquinol cation radical have been assigned by deuteration.The spectra of the deuterated anthraquinol cation radicals and the assignment of hyperfine coupling constants are discussed.
Kinetics and mechanism of anthracene oxidation with tert-butyl hydroperoxide over metal-organic frameworks Cr-MIL-101 and Cr-MIL-100
Ivanchikova,Skobelev,Kholdeeva
, p. 175 - 181 (2015)
The oxidation of anthracene (AN) with tert-butyl hydroperoxide (TBHP) over metal-organic frameworks (MOFs) Cr-MIL-101 and Cr-MIL-100 produced anthraquinone (AQ) in a nearly quantitative (>99%) yield after 1 and 4 h, respectively, at 100 °C in chlorobenzene (ClPh). At initial stages of the reaction, some amounts (a was found to be similar for MIL-101 and MIL-100 (15 kcal/mol) while pre-exponential factors were different (7·106 and 3·106 L/(mol·min), respectively). The kinetic results indicated that the AN oxidation with TBHP over both MIL-101 and MIL-100 is not controlled by diffusion. No adsorption of AN on the MOFs from ClPh solution was found at the reaction temperature. A mechanism that involves a reversible interaction between TBHP and CrIII centers within the MOF framework producing an active oxidizing species (rate-limiting step), followed by oxygen atom transfer from the peroxo species to the aromatic substrate to give primary oxygenated product(s), further oxidation of which leads to AQ, has been suggested.
Oxidation with the H2O2-VO3--pyrazine-2-carboxylic acid reagent 2. Oxidation of alcohols and aromatic hydrocarbons
Shul'pin, G. B.,Druzhinina, A. N.,Nizova, G. V.
, p. 1326 - 1329 (1993)
Aromatic hydrocarbons are oxidized with hydrogen peroxide in the presence of catalytic amounts of VO3- and pyrazine-2-carboxylic acid into phenols (provided excess hydrocarbon is used) or into quinones (at high H2O2 concentrations). 2-Propanol, ethanol, cyclohexanol, and benzyl alcohol are transformed into the corresponding aldehydes and ketones under the same conditions (without a solvent or in MeCN). - Key words: oxidation, hydrogen peroxide, vanadium complexes; aromatic hydrocarbons; alcohols.
Pulse Radiolyses of Anthraquinone and Anthraquinone-Triethylamine in Acetonitrile and Toluene at Room Temperature
Nakayama, Toshihiro,Ushida, Kiminori,Hamanoue, Kumao,Washio, Masakazu,Tagawa, Seiichi,Tabata, Yoneho
, p. 95 - 104 (1990)
Nanosecond pulse radiolysis of anthraquinone (AQ) in several solvents has been performed at room temperature, and the following results are obtained: (1) In acetonitrile (CH3CN), the formation of triplet AQ and a free-radical anion (AQ.-) of AQ is observed.The former is produced by energy transfer from an excited neutral of CH3CN which may be produced via the geminate recombination of a radical cation and a radical anion of CH3CN in a spur, while the latter is produced by electron transfer from anionic species such as a solvated electron, a monomeric and/or dimeric radical anion of CH3CN.In CH3CN-triethylamine (TEA), both free AQ.- and triplet AQ mentioned above are also produced; however, the latter reacts with TEA, giving rise to the formation of free AQ.- (from the second triplet state of AQ) and an exciplex of the lowest triplet state of AQ with ground-state TEA.This exciplex decomposes to free AQ.- and the radical cation of TEA. (2) In toluene, only triplet AQ is produced by energy transfer from triplet toluene to AQ, and, in the presence of TEA, the formation of the triplet exciplex of AQ-TEA is observed.On a microsecond timescale, however, this exciplex changes to a contact ion pair followed by proton transfer, generating anthrasemiquinone radical and triethylamine radical in accordance with the result of photolysis.
Self-Assembled Cofacial Zinc–Porphyrin Supramolecular Nanocapsules as Tuneable 1O2 Photosensitizers
Colomban, Cédric,Fuertes-Espinosa, Carles,Goeb, Sébastien,Sallé, Marc,Costas, Miquel,Blancafort, Lluís,Ribas, Xavi
, p. 4371 - 4381 (2018)
We demonstrate the benefits of using cofacial Zn–porphyrins as structural synthons in coordination-driven self-assembled prisms to produce cage-like singlet oxygen (1O2) photosensitizers with tunable properties. In particular, we describe the photosensitizing and emission properties of palladium- and copper-based supramolecular capsules, and demonstrate that the nature of the bridging metal nodes in these discrete self-assembled prisms strongly influences 1O2 generation at the Zn–porphyrin centers. The PdII-based prism is a particularly robust photosensitizer, whereas the CuII self-assembled prism is a dormant photosensitizer that could be switched to a ON state upon disassembly of the suprastructure. Furthermore, the well-defined cavity within the prisms allowed encapsulation of pyridine-based ligands and fullerene derivatives, which led to a remarkable guest tuning of the 1O2 production.
Photoproducts of carminic acid formed by a composite from Manihot dulcis waste
Antonio-Cisneros, Cynthia M.,Dvila-Jimnez, Martn M.,Elizalde-Gonzlez, Mara P.,Garca-Daz, Esmeralda
, p. 725 - 732 (2015)
Carbon-TiO2 composites were obtained from carbonised Manihot dulcis waste and TiO2 using glycerol as an additive and thermally treating the composites at 800 °C. Furthermore, carbon was obtained from manihot to study the adsorption,
INTRODUCTION OF ONE-CARBON UNITS DURING ANTHRAQUINONE-CATALYSED PULPING OF WOOD
Cameron, Donald W.,Samuel, Eva L.
, p. 1841 - 1842 (1981)
Anthraquinone- and tetrahydroanthraquinone-catalysed pulping of Pinus radiata has given 10-methyl-9-anthrone (2) and derivatives (3) and (4), introduction of the carbon substituent involving carbohydrate constituents of the wood.
Anthrone complexation with aliphatic amines in an aprotic medium
Serdyuk,Abakumov,Kapitanov,Kasianczuk,Opeida
, p. 1470 - 1473 (2013)
Aromatic ketone (anthrone) complexation with aliphatic amines is studied by UV-Vis, 1H, 1H-1H COSY NMR spectroscopy. It is found that the catalytic activity of aliphatic amine is observed in the reaction of anthrone oxidation by molecular oxygen in aprotic media due to the formation of intermolecular complexes consisting of two anthrone molecules and one aliphatic amine molecule.
Novel highly stable β-cyclodextrin fullerene mixed valent Fe-metal framework for quick Fenton degradation of alizarin
Gogoi, Aniruddha,Navgire, Madhukar,Sarma, Kanak Chandra,Gogoi, Parikshit
, p. 40371 - 40382 (2017)
β-Cyclodextrin (β-CD) supported magnetic nanoscaled fullerene/Fe3O4 (CDFMNPs) and fullerene/Fe3O4 (FMNPs) composites were prepared and characterized. These composites can be utilized as heterogeneous catalysts for the Fenton oxidation reaction to degrade alizarin in aqueous solutions. The saturation magnetization (Ms) value of quasi-spherical CDFMNPs was found to be 13.16 emu g-1 and their diameter was in the range of 25-30 nm. The catalytic activities of the prepared materials were tested with varying conditions of pH, amount used and the concentration of H2O2 for degradation of alizarin at room temperature. The exceptionally high degradation efficiency of CDFMNPs was observed for alizarin at pH 3 with 2.0 g L-1 catalyst and 25 mM of H2O2. The increased oxidative degradation efficiency is attributed mainly to the formation of active hydroxyl radicals (OH) on the surface of the catalyst, which are generated by the active decomposition of H2O2 by the solid heterogeneous catalyst and the promoting effect of β-CD. CDFMNPs can be magnetically separated and the catalyst was found to be reusable and stable for five successive runs with no significant loss of catalytic activity. In the magnetic environment of Fe3O4 nanoparticles, fullerene has a crucial role to enhance the activity by increasing the stability with nominal iron leaching. Based on mass analysis of alizarin degradation, the formation of aliphatic acids and monocyclic compounds through phthalic anhydride and di-methyl phthalate established the proposed degradation path.

