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.
Selective benzylic oxidation of alkyl substituted aromatics to ketones over Ag/SBA-15 catalysts
Anand, Narani,Reddy, Kannapu Hari Prasad,Prasad, Ganjala Venkata Siva,Rama Rao, Kamaraju Seetha,Burri, David Raju
scheme or table, p. 5 - 9 (2012/06/16)
Benzylic and cycloalkane CH bonds have selectively been oxidized into corresponding ketones with t-BuOOH over Ag/SBA-15 catalysts, which were prepared by varying the loading of Ag (2, 4, 6 and 8% by weight) on SBA-15 support using an impregnation method. The retention of mesoporous structural ordering and crystalline behavior of Ag have been confirmed by N2 adsorption and XRD studies. 4Ag/SBA-15 catalyst is found to be the best catalyst among the Ag/SBA-15 series. The influence of various parameters such as oxidant, solvent, temperature and time of reaction etc. have been systematically studied on Ag/SBA-15 catalyst.
