Güncel Gönderiler: Kimya Bölümü
Toplam kayıt 195, listelenen: 101-120
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Facile synthesis of novel 7-aminofuro- and 7-aminothieno[2,3-d]pyridazin-4(5H)-one and 4-aminophthalazin-1(2H)-ones
(PERGAMON-ELSEVIER SCIENCE LTD, 2013)We hereby report the synthesis of a novel class of compounds, 7-aminofuro- and 7-aminothieno[2,3-d]pyridazin-4(5H)-one and 4-aminophthalazin-1(2H)-ones starting from methyl 2-(2-methoxy-2-oxoethyl)furan- and thiophene-3- ... -
New nickel(II), palladium(II), platinum(II) complexes with aromatic methanesulfonylhydrazone based ligands. Synthesis, spectroscopic characterization and in vitro antibacterial evaluation
(ELSEVIER SCIENCE SA, 2013)Methanesulfonicacid hydrazide (a sulfonamide compound, msh: CH3SO2NHNH2) derivatives: salicylalde hydemethanesulfonylhydrazone (salmsh), 2-hydroxyacetophenonemethanesulfonyl hydrazone (afmsh), 2-hydroxy-3-metoxybenzaldeh ... -
Some new energetic benzaldoximes Synthesis, structure and a comparison of theoretic and experimental results of thermal decomposition
(SPRINGER, 2013)5-Nitro-2-hydroxy benzaldoxime (I), 3-nitro-4-hydroxy benzaldoxime (II), 3,5-dinitro-2-hydroxy benzaldoxime (III), and 3,5-dinitro-4-hydroxy benzaldoxime (IV) were prepared from their respective nitrated aldehydes. Prepared ... -
Simultaneous Preconcentration and Determination of Ni and Pb in Water Samples by Solid-Phase Extraction and Flame Atomic Absorption Spectrometry
(AOAC INT, 2013)An analytical method for the preconcentration of nickel (Ni) and lead (Pb) in water samples on polystyrene-graft-ethylmethacrylate copolymer resin has been developed. The determinations of metal ions were performed by flame ... -
Synthesis, structure and magnetic properties of Ni(II)-Co(II) heterodinuclear complexes with ONNO type Schiff bases as ligands
(PERGAMON-ELSEVIER SCIENCE LTD, 2013)Four new heterodinuclear Ni(II)-Co(II) complexes, NiL center dot CoCl2.(DMF)(2) (I), NiL center dot CoBr2 center dot DMF)(2) (II), NiL'center dot CoCl2 center dot(DMF)(2) (III) and NiLDM center dot CoCl2(DMF)(2) (IV), have ... -
Design and Synthesis of Pyrrolotriazepine Derivatives: An Experimental and Computational Study
(AMER CHEMICAL SOC, 2013)The pyrrole derivatives having carbonyl groups at the C-2 position were converted to N-propargyl pyrroles. The reaction of those compounds with hydrazine monohydrate resulted in the formation of 5H-pyrrolo[2,1-d][1,2,5]-triazepine ... -
Synthesis, crystal structure, and thermal decomposition of two Co(II) complexes with NNN pyrazolyl type ligand and pseudo-halogen
(MAIK NAUKA/INTERPERIODICA/SPRINGER, 2013)The Co(II) complexes I and II were prepared in nonaqueous solvents containing cyanate with pyrazolylpyridine ligands, namely, bis-2,6-(pyrazol-1-yl) pyridine (Pp) and bis-2,6-(3,5-dimethyl-pyrazol-1-yl) pyridine (Dmpp), ... -
Furo- and thieno-fused 1,3-diazepine-4,6-diones
(PERGAMON-ELSEVIER SCIENCE LTD, 2013)We report the first preparation of furo- and thieno-fused 1,3-diazepine-4,6-dione derivatives starting from ethyl 2-(2-methoxy-2-oxoethyl)-3-furancarboxylate and -thiophencarboxylate. The ester functionalities connected ... -
Chemical Composition of Nigella sativa L. Seeds Used as a Medical Aromatic Plant from East Anatolia Region, Turkey
(ASIAN JOURNAL OF CHEMISTRY, 2013)In this study, chemical composition such as vitamins, fatty acids and trace elements of Nigella sativa L. seeds collected from East Anatolia Region of Turkey were investigated. Fatty acids in the lipid extracts were converted ... -
Investigation of heavy metal concentrations in some Turkish wines
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2014)Research studies analysing heavy metal or trace elements in Turkish wines is scarce. This study was designed to fill this gap, analysing 43 wines produced in 4 different regions in Turkey. A total of 37 red and 6 white ... -
Thermal Decomposition of Dinitro-chloro-azido Benzenes: A Comparison of Theoretical and Experimental Results
(TAYLOR & FRANCIS INC, 2014)1,2-Dichloro benzene (I) and 1,2,3-trichloro benzene (II) were nitrated under appropriate strong conditions. Nitrated mixtures were reacted with NaN3 in polar solvents. As a result of the nucleophilic substitution, mixtures ... -
High-resolution continuum source flame atomic absorption spectrometric (HR-CS FAAS) determination of trace aluminium and lead in water and some beverage samples after separation and preconcentration procedure
(TAYLOR & FRANCIS LTD, 2014)In the present study, a solid phase extraction procedure has been presented for the separation and preconcentration of aluminium (Al) and lead (Pb) in various matrixes such as water, cola and fruit juice samples. ... -
Mechanisms of the Reaction between Polyhalogenated Nitrobutadienes and Electron-Deficient Anilines: Computational Modeling
(AMER CHEMICAL SOC, 2014)Nitro-substituted polyhalogenated butadienes are valuable synthetic precursors for polyfunctionalized bioactive heterocyclic compounds. Recently, a new reaction between 2-nitroperchloro-1,3-butadiene and electron-deficient ... -
Removal And Preconcentratıon Of Cadmıum On Polystyrene-Graft-Ethylmethacrylate Copolymer
(GH ASACHI TECHNICAL UNIV IASI, 2014)The removal and determination of toxic heavy metal ions in aqueous solutions has been given much more attention over the past few years. In this paper, a removal and separation/preconcentration method for cadmium species ... -
Synthesis, crystal structure, chromatographic seperation, and thermogravimetric investigation of a ONNO type asymmetric Schiff base and its trinuclear complexes
(MAIK NAUKA/INTERPERIODICA/SPRINGER, 2014)1,3-Propanediamine was put to react with 2-hydroxybenzaldehyde and 2-hydroxyacetophenone sequentially in aprotic medium. The crystalline product was examined by high performance liquid chromatography. The composition was ... -
Separation and Adsorption Properties of Poly Styrene-Graft-Ethyl Methacrylate Copolymer for Zinc, Copper, and Cobalt Ions in Water Samples
(WILEY, 2014)In this article, separation and adsorption properties of poly styrene-graft-ethyl methacrylate copolymer for zinc, copper, and cobalt ions in water samples were investigated. For this aim, some experimental and analytical ... -
In vitro and transdermal penetration of PHBV micro/nanoparticles
(SPRINGER, 2014)The purpose of this study was to develop micro and nano sized drug carriers from poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), and study the cell and skin penetration of these particles. PHBV micro/nanospheres were ... -
Synthesis, structure and magnetic properties of homotrinuclear Ni(II) complexes with asymmetric Schiff-base ligands
(ELSEVIER SCIENCE SA, 2014)By using 1,3-propanediamine, 2-hydroxyacetophenone and salicylaldehyde an asymmetric ONNO type Schiff base, N(hydroxyphenylidene)-N'(2-hydroxyacetophenylidene)-1,3-propanediamine (H(2)metsalpn), has been prepared and ... -
Synthesis and characterization of a novel polyphosphazene and its application to biosensor in combination with a conducting polymer
(ELSEVIER SCIENCE SA, 2014)An amperometric glucose biosensor was prepared successfully based on a conducting polymer, poly(4-(2,5-di(thiophen-2-y1)-1H-pyrrol-1-yl)benzenamine) (poly( SNS-NH2)) and a flexible hydrophilic polyphosphazene polymer, ... -
Some Novel Antimicrobial Therapeutic Agents for Acetylcholinesterase Inhibitors; Synthesis of Hydroxyquinoline Ester Involving Amino Acid
(GAZI UNIV, 2015)The aim of this work was to investigate the new effective agents candidate for treatment of the Alzheimer's disease. So, a series of new and highly active acetylcholinesterase inhibitors derived from hydroxyquinoline ester ...
