A5032615544- Porphyrin and Phthalocyanine Chemistry
- Synthesis and Characterization of Pyrroles
- Luminescence and Fluorescent Materials
- Asymmetric Synthesis and Catalysis
- Metal complexes synthesis and properties
- Crystal structures of chemical compounds
- Phosphorus compounds and reactions
- Molecular Sensors and Ion Detection
- X-ray Diffraction in Crystallography
- Lanthanide and Transition Metal Complexes
- Fluorine in Organic Chemistry
- Conducting polymers and applications
- Crystallization and Solubility Studies
- Synthesis of Indole Derivatives
- Magnetism in coordination complexes
- Organic Electronics and Photovoltaics
- Organophosphorus compounds synthesis
- Crystallography and molecular interactions
- Inorganic and Organometallic Chemistry
- Chemical Synthesis and Reactions
- Chemical Synthesis and Analysis
- Analytical Chemistry and Sensors
- Oxidative Organic Chemistry Reactions
- Cyclopropane Reaction Mechanisms
- Adsorption and biosorption for pollutant removal
Hacettepe University
2015-2024
Beytepe Asker Hastanesi
2018
Boğaziçi University
2002
Institut de Chimie des Substances Naturelles
2002
Centre National de la Recherche Scientifique
2002
Veszprémi Érseki Hittudományi Fõiskola
1999
University of Pannonia
1999
University of Bristol
1996
Abstract In this study, we present an unprecedented reaction of BOPHY. Although tetrabrominated BOPHY ( BrBPH ) is known to give a substitution with amines, found that proceeds through addition mechanism in the dilute medium. Upon reaction, absorption and fluorescence bands decrease dramatically. We used newly presented for fluorimetric detection quantification amines. ‐adsorbed TLC plates were also utilized determination food spoilage.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRhodaoxetane: synthesis, structure, and theoretical evaluationMaria J. Calhorda, Adelino M. Galvao, Canan Unaleroglu, Andrei A. Zlota, Felix Frolow, David MilsteinCite this: Organometallics 1993, 12, 8, 3316–3325Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Published inissue 1 August 1993https://pubs.acs.org/doi/10.1021/om00032a062https://doi.org/10.1021/om00032a062research-articleACS PublicationsRequest reuse...
The Friedel-Crafts reaction of homochiral pyrrole derivatives with α,β-unsaturated esters catalyzed by metal triflates furnished conjugate addition products. best yields were obtained using yttrium triflate and methyl 4-phenyl-2-oxobut-3-enoate (2a). worked regioselectively at C-5 pyrrole. diastereoisomers separated column chromatography.
Novel phosphonate compounds were synthesized via Michael addition of N-heteroaromatic to aryl- and alkyl-substituted vinylphosphonates using scandium triflate as the catalyst. Intramolecular cyclization reaction adducts obtained gives novel (dimethoxyphosphoryl)pyrrolizin-3-ones in high yields a single diastereomer.
Metal triflate catalyzed addition reaction of pyrrole to methyl 2-oxo-4-phenylbut-3-enoate and substituted derivatives generated the related novel alkylated pyrroles regioselectively at C(2) pyrrole.Among studied metal triflates, Cu(OTf) 2 was found be more effective in reaction.The synthesized 2-oxo-4-phenyl-4-(1H-pyrrole-2-yl)butanoate esters underwent self-cyclization by heating yielded corresponding 3-hydroxy-1-phenyl-2,3-dihydro-1H-pyrrolizine-3-carboxylate derivatives.This procedure...
A highly efficient, regioselective, and environmentally friendly method has been developed for water-mediated synthesis of 2,3,6-trisubstituted pyridines 5,6,7,8-tetrahydroquinolines. The introduced allows easy preparation various polysubstituted 5,6,7,8-tetrahydroquinolines via domino reaction an enolizable ketone, ammonia enones derived from different Mannich bases in mild conditions. Montmorillonite K-10 promoted this one-pot three-component gave both new known good yields. protocol...
A new and practical direct transformation of primary nitro compounds into nitriles with sodium dithionite is described. The reaction simple, convenient eliminates the use expensive moisture-sensitive reagents.
The preparation of copper ascorbate in CH2Cl2 is described. reaction between copper(II) methoxide and L-ascorbic acid the presence N,N,N′,N′-tetramethylethylenediamine (TMEDA) under strictly anaerobic conditions leads to formation a stable Cu(II)-ascorbate complex. No redox takes place. Spectroscopic evidence suggest that compound polymeric where Cu(II) chelated by enolic oxygens one unit side chain alcoholic another.
Regioselective addition of pyrrole to methyl 3-aryl-2-cyanoacrylates was achieved, in high yields, with copper(II) triflate as the catalyst toluene. C-Alkylated pyrroles afforded novel pyrrolizin-3-ones, good yields and diastereomeric ratio by an intramolecular cyclization reaction under mild conditions.
ABSTRACT Two new Cr(III)-ascorbate complexes, K[Cr(C6H7O6)2(OH)2-(H2O2)2]·3H2O (1) and K2[Cr(C6H7O6)3(OH)2(H2O)]·2H2O (2), have been prepared by reducing chromate with L-ascorbic acid in aqueous THF. The complexes characterized various analytical spectroscopic methods (UV/Vis, FTIR, 13C NMR EI MS) thermal magnetic measurements. Experimental results indicated a distorted octahedral environment around the Cr(III) centers coordination mode of ascorbic has shown to be monodentate through its...
The synthesis and structural characterization of mixed vitamin-metal complexes are reported. A complex bearing two vitamins (B3 B13) on the same metal centre, nicotinamide(orotato)nickel(II) pentahydrate, has been prepared characterised by single-crystal X-ray diffraction methods. Cr(III) with C B13, bis(ascorbato)orotatochromium(III) dihydrate, isolated its nature investigated means IR, 13C NMR, API-ES thermogravimetric measurements. Theoretical calculations have performed to propose a...
Abstract β‐Amino alcohols derived from (1 R ,2 S )‐norephedrine were synthesized and used as ligands in the catalytic enantioselective diethylzinc addition to benzaldehydes. N ‐alkylated )‐norephedrine‐based derivative 3a gave highest enantioselectivity. The effects of different parameters on enantioselectivity product investigated. Copyright © 2009 John Wiley & Sons, Ltd.