1499-12-3Relevant articles and documents
Cycloreversion Induced by Charge-Transfer Excitation of Electron Donor-Acceptor Complexes. Wavelength-Dependent Photochemistry of Dianthracene
Masnovi, J. M.,Kochi, J. K.
, p. 6781 - 6788 (1985)
The electron donor-acceptor or EDA complexes of dianthracene (An2 is the ?-dimer of anthracene) and its derivatives with tetracyanoethylene show two unusually well-resolved charge-transfer (CT) bands.Specific irradiation of each of these absorption bands with monochromatic light at five selected wavelengths ranging from 405 to 577 nm leads to the clean cycloreversion of An2 to anthracene.The striking wavelength-dependent quantum efficiency for cycloreversion is analyzed in terms of two different CT ion pairs derived from the photoexcitation of the first and second absorption bands, which correspond to electron promotion from the HOMO and SHOMO (second highest occupied molecular orbital) of the dianthracene donor, respectively.Orbital correlations between dianthracene ?-dimer reveal that electron promotion from the SHOMO of dianthracene leads to an excited radical ion An2(+) which is more dissociative than that derived from the HOMO transition.
Process for the production of carboxylic acid esters of 9,10-dihydroxy anthracene
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Page 3; 4, (2010/02/07)
In einem Verfahren zur Herstellung von 9,10-Dihydroxyanthracencarbons?ureester und dessen Abk?mmlingen durch katalytische Oxidation von Anthracen wird Anthracen in der flüssigen Phase in einem Carbons?uremedium in Gegenwart eines organischen Metallsalzes und eines Aktivierungsmittels für das Metallsalz bei einer Temperatur von etwa 40 °C und mehr unter Einwirkung von Sauerstoff und Licht behandelt, der Niederschlag abgetrennt, der flüssige Rest mit Veresterungsmitteln behandelt und der erhaltene Ester aus dem Reaktionsgemisch isoliert.
Kinetics and Mechanism of Oxidation of Some Aromatic Hydrocarbons by Phenyl Iodosylacetate
Radhakrishnamurti, P. S.,Panda, H. P.,Pradhan, D. C.
, p. 297 - 300 (2007/10/02)
Oxidation of toluene, o-xylene, p-xylene, m-xylene, naphthalene and anthracene with phenyl iodosylacetate follows second order kinetics.The reactions are strongly dependent on the permitivity of the solvent medium.The activation parameters have been computed.Side chain acetoxylation is the major reaction in the case of toluene, o-xylene and p-xylene while nuclear acetoxylation has been encountered in the case m-xylene, naphthalene and anthracene.The mechanisms of side chain and nuclear acetoxylation are proposed, which satisfy the kinetic data obtained.