10210-32-9Relevant articles and documents
An efficient and selective benzylic oxidation of tetralin to 1-tetralone on Cu(II) immobilized Γ-Fe2O3@SBA-15 magnetic nanocatalyst in green water medium without base or additives
Neeli, Chinna Krishna Prasad,Kannapu, Hari Prasad Reddy,Kalevaru, Venkat Narayana,Kamaraju, Seetha Rama Rao,Burri, David Raju
, p. 74 - 84 (2018)
A novel Cu(II)/γ-Fe2O3@SBA-15 magnetic nanocatalyst has been synthesized aiming at possessing high surface area, magnetic property, highly dispersed and stabilized Cu(II) complex using SBA-15 by sequential magnetization and Cu(II) immobilization with Fe(acac)3 and Cu(OAc)2 precursors. The nanocatalyst was well authenticated by different techniques like BET surface area, X-ray diffraction, X-ray photoelectron spectroscopy, FT-IR, vibrating sample magnetometer and thermogravimetric analysis. Cu(II)/γ-Fe2O3@SBA-15 was found to be effective for the benzylic oxidation of tetralin to 1-tetralone using TBHP at mild reaction conditions in green water medium even in absence of any bases or additives. The heterogeneity of catalyst was confirmed by hot filtering test and further reused for at least 4 times without significant loss in catalytic activity. Ease of catalyst separation, its reusable capacity, wider applicability of alkyl aromatics and importantly reaction operation in water as green medium by elimination of hazardous organic solvents are the commendable merits of this catalyst.
Torsional Angle and Conformation in 2-Vinylanthracene Studied by NMR Spectroscopy and MO Calculations
Ni, Yong,Siegel, Jay S.,Hsu, Victor L.,Kearns, David R.
, p. 9211 - 9213 (1991)
High-resolution deuterium NMR spectra of 2-vinylanthracene-α-d in dichloromethane were recorded.The observed quadrupolar splitting was used to calculate the torsional angle between the vinyl and anthracene planes.The potential energy surface for rotation about the C(vinyl)-C(arom) bond is calculated by using the AM1 Hamiltonian.
Concerted Interplay of Excimer and Dipole Coupling Governs the Exciton Relaxation Dynamics in Crystalline Anthracenes
Philip, Abbey M.,Manikandan, Sreenath K.,Shaji, Anil,Hariharan, Mahesh
, p. 18089 - 18096 (2018)
A combined theoretical and experimental investigation into the role of concerted long- (dipole coupling) and short-range (orbital overlap mediated excimer) electronic interactions in modulating the emission of six crystalline acetylanthracenes (1–3) is reported. Friedel–Crafts acylation of anthracene rendered crystalline acetylanthracenes with discrete close packing, varied orbital overlap, and resultant distinct emission (blue–green–yellow) from cooperative excimer and dipole coupling. Time-resolved emission spectroscopy (TRES) studies and the Kasha's exciton theory based quantitative estimation of dipole coupling (mean-field approximation) substantiates the exciton dynamics in crystalline 1–3. Extension of the Kasha's exciton model beyond the traditional nearest-neighbor approach, and consistent agreement among the computed spectral shifts and TRES temporal components, corroborate a holistic approach to decipher the exciton relaxation dynamics in the molecular assembly of novel photonic materials.
Selective benzylic oxidation of alkylaromatics over Cu/SBA-15 catalysts under solvent-free conditions
Neeli, Chinna Krishna Prasad,Narani, Anand,Marella, Ravi Kumar,Rama Rao, Kamaraju Seetha,Burri, David Raju
, p. 5 - 9 (2013/07/26)
With the purpose of benzylic oxidation of alkylaromatics into corresponding ketones selectively under solvent-free conditions, cheap, simple and versatile Cu/SBA-15 catalyst system with the Cu loading of 5, 10, 15 and 20% has been prepared by impregnating SBA-15 support. Among Cu/SBA-15 catalysts, 10%Cu/SBA-15 exhibited superior activity and selectivity.
Derivative spectrophotometric method for simultaneous determination of nickel(II) and copper(II) using 6-(anthracen-2-yl)-2,3-dihydro-1,2,4-triazine-3- thione
Tehrani, M. Barazandeh,Mirkamali,Souri,Foroumadi
experimental part, p. 4517 - 4521 (2012/08/28)
Derivative spectrophotometric method using newly synthesized reagent, 6-(anthracen-2-yl)-2,3-dihydro-1,2,4-triazine-3-thione (ADTT), has been developed for the simultaneous determination of copper and nickel. The reagent was synthesized by the acylation of anthracene and then reaction of the resulted product with amylnitrite to produce (anthracen-2-yl)-glyoxal aldoxime. After addition of thiosemicabazone the reagent was prepared. Copper and nickel were determined by using zero-crossing method in the second, third and fourth order derivative spectra after derivatization in basic medium. Beers's law was obeyed in the range of 5-35 μg/mL for copper at 387 nm (second order) and 554 nm (third order) and 5-35 μg/mL nickel at 447 nm (first order), 400 nm (third order) and 385 nm (fourth order). The limit of quantification was 5 μg/mL for both cations. The within-day and between-day variations in three concentrations were less than 3.36 and 4.73 % in all measurements, respectively. The proposed method is simple and accurate for determination of binary mixtures.