529-23-7Relevant articles and documents
Regioselectivity of Friedlaender quinoline syntheses
Diedrich, Claas Lueder,Haase, Detlev,Saak, Wolfgang,Christoffers, Jens
, p. 1811 - 1816 (2008)
Optically active, bicyclic ketones were submitted to Friedlaender quinoline syntheses with 2-aminobenzaldehyde to yield regioisomeric linear or angular products. When starting from trans-configured ketones, the linear products are the major isomers (ratio
Tailored routes for home-made Bi-doped ZnO nanoparticles. Photocatalytic performances towards o-toluidine, a toxic water pollutant
Mostoni,Pifferi,Falciola,Meroni,Pargoletti,Davoli,Cappelletti
, p. 534 - 545 (2017)
Herein we report the photodegradation of highly toxic o-toluidine in aqueous media (under UV irradiation), by using home-made bare and bismuth-doped ZnO nanoparticles. The latter powder was prepared by both a traditional impregnation method and by an innovative sol-gel synthesis, obtained using bismuth nitrate as precursor. Moreover, synthetic conditions (such as zinc salts and medium acidity) were varied in order to obtain different semiconductor nanopowders with diverse physico-chemical properties and, hence, photocatalytic performances. Both the disappearance and the mineralization of the pollutant molecule were followed by Linear Sweep Voltammetry and Total Organic Carbon techniques, respectively. Photocatalysis by-products were then identified by HPLC–MS (on eluates, after 3 h and 6 h) and ATR-FTIR (on used nanopowders) analyses. Thus, a new photodegradation pathway (with azo dimer derivatives in the first step) has been proposed. Bi-impregnated samples show high degree of mineralization, reducing the stability of the intermediates.
Non-covalent aggregation of discrete metallo-supramolecular helicates into higher assemblies by aromatic pathways: Structural and chemical studies of new aniline-based neutral metal(II) dihelicates
Vazquez, Miguel,Bermejo, Manuel R.,Licchelli, Maurizio,Gonzalez-Noya, Ana M.,Pedrido, Rosa M.,Sangregorio, Claudio,Sorace, Lorenzo,Garcia-Deibe, Ana M.,Sanmartin
, p. 3479 - 3490 (2005)
Neutral manganese(II), iron(II), cobalt(II), nickel(II), zinc(II) and cadmium(II) complexes with an N-tosyl-substituted N4-donor Schiff base containing a 4,4′-methylenedianiline residue as spacer [H 2La: N,N′-bis(2-tosylaminobenzylidene)-4,4′- methylenedianiline], and the zinc(II) complex with an analogous ligand [H 2Lb: N,N′-bis(2-tosylaminobenzylidene)-4,4′- oxodianiline] have been prepared by an electrochemical procedure. FAB and ESI mass spectra of the complexes show peaks due to species corresponding to a general formula [M2(La,b)2 + H]+, thereby suggesting their dinuclear nature. A detailed study of the crystal packing in the unit cell of the zinc(II) complex with H2La shows that the helicates aggregate to form discrete prismatic moieties containing three molecules held together by π-π and σ-π interactions. Moreover, the ZnII neutral dihelicate with H 2Lb forms a 3D network in the solid state due to intermolecular π-stacking interactions. 1H NMR studies of the diamagnetic compounds reported herein have been performed. Finally, the ligand H2La and its ZnII and CdII complexes have been studied by spectrophotometric and spectrofluorimetric techniques in order to get a better understanding of the formation mechanisms of the complexes and of the nature of their fluorescence emission. Emission studies show that the ZnII and CdII dihelicates with H2L a display a green fluorescence in acetonitrile solution (λ = 473 nm, Φ = 0.03 and λ = 476 nm, Φ = 0.01, respectively). Wiley-VCH Verlag GmbH & Co. KGaA 2005.
Synthesis, characterization, and application of a manganese Schiff base complex containing salicylaldehyde-poly(vinylamine)/SBA-15 as a novel heterogeneous hybrid catalyst
Massah, Ahmad Reza,Kalbasi, Roozbeh Javad,Kaviyani, Somayeh
, p. 12816 - 12825 (2013)
A manganese Schiff base complex containing salicylaldehyde-poly(vinylamine) /SBA-15 (Mn-SA-PVAm/SBA-15) composite was prepared as a novel heterogeneous catalyst through in situ polymerization of vinylamine within the nano-channels of mesoporous silica SBA-15 without using any organo silica precursors. The catalyst was characterized well by elemental analysis, FT-IR, AAS, DRS UV-Vis, XRD, BET, SEM and TGA techniques. The catalytic activity of the supported metal complex was studied in the selective oxidation of benzyl alcohols using t-butyl hydroperoxide as an oxidant. The effects of reaction temperature, solvent and the amount of catalyst as well as the recyclability of the catalyst were investigated. The Royal Society of Chemistry 2013.
Fe3O(OAc)6(Py)3 Mediated Reduction of Aromatic Nitro Compounds with 2-Mercaptoethanol
Murata, Satoru,Miura, Masahiro,Nomura, Masakatsu
, p. 361 - 362 (1988)
Aromatic nitro compounds were selectively reduced by 2-mercaptoethanol in the presence of Fe3O(OAc)6(Py)3 to give the corresponding amines in good yields.
Metal-Free Annulation of 2-Nitrobenzyl Alcohols and Tetrahydroisoquinolines toward the Divergent Synthesis of Quinazolinones and Quinazolinethiones
Le, Nhan T. H.,Ly, Duc,Nguyen, Khang X.,Nguyen, Thao T.,Nguyen, Tung T.,Nguyen, Vy P. T.,Pham, Phuc H.,Phan, Nam T. S.,Tran, Cam T. H.
supporting information, (2022/01/03)
A simple metal-free method for the synthesis of quinazolinones from commercially available 2-nitrobenzyl alcohols and tetrahydroisoquinolines is developed. The reaction conditions were tolerant of an array of functionalities such as halogen, tertiary amine, protected alcohol, and ester groups. Under nearly identical conditions, quinazolinethiones were obtained in the presence of elemental sulfur and suitable mediators.
Non-alkylator anti-glioblastoma agents induced cell cycle G2/M arrest and apoptosis: Design, in silico physicochemical and SAR studies of 2-aminoquinoline-3-carboxamides
Gu, Xiangyu,Liu, Jianwen,Ni, Xintong,Qi, Yingxue,Qian, Xuhong,Shao, Xusheng,Xu, Xiaoyong,Yuan, Pengtao
, (2021/09/22)
Malignant gliomas are the most common brain tumors, with generally dismal prognosis, early clinical deterioration and high mortality. Recently, 2-aminoquinoline scaffold derivatives have shown pronounced activity in central nervous system disorders. We herein reported a series of 2-aminoquinoline-3-carboxamides as novel non-alkylator anti-glioblastoma agents. The synthesized compounds showed comparable activity to cisplatin against glioblastoma cell line U87 MG in vitro. Among them, we found that 6a displayed good inhibitory activity against A172 and U118 MG glioblastoma cell lines and induced cell cycle arrest in the G2/M phase and apoptosis in U87 MG by flow cytometry analysis. Additionally, 6a displayed low cytotoxicity to several normal human cell lines. In silico study showed 6a had promising physicochemical properties and was predicted to cross the blood–brain barrier. Moreover, preliminary structure–activity relationships are also investigated, shedding light on further modifications towards more potent agents on this series of compounds. Our results suggest this compound has a promising potential as an anti-glioblastoma agent with a differential effect between tumor and non-malignant cells.