ORCID "KAYA, AFSIN AHMET / 0000-0003-2082-6478" WoS İndeksli Yayınlar Koleksiyonu için listeleme
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4-[2-(Cyclohexa-1,4-dien-1-yl)ethoxy]benzene-1,2-dicarbonitrile
Kelesoglu, Zeynep; Kaya, Elif Celenk; Kaya, Afsin Ahmet; Kantekin, Halit; Buyukgungor, Orhan (Wiley-Blackwell, 2011)In the title compound, C16H14N2O, the dihedral angle between the aromatic rings is 70.23 (6)degrees. The linking chain has a zigzag conformation. In the crystal, molecules are linked by weak intermolecular C-H center dot ... -
Aromatisation in adducts of alpha-terpinene: Influence of hindered internal rotations
Kaya, Afsin Ahmet; Sengul, Mehmet Emin; Menzek, Abdullah; Kayaardi, Ibrahim; Karakus, Murat; Sahin, Ertan (Science Reviews 2000 Ltd, 2011)Each adduct of alpha-terpinene with p-quinone and 1,4-naphthoquinone in Ac(2)O/Et(3)N at 180 C gives two aromatic products, one of which had a distinctive smell formed by the loss of an ethylene group. Here, we report the ... -
Enhancing of the nonlinear absorption and optical limiting performances of the phthalocyanine thin films by adding of the single walled carbon nanotubes in poly(methyl methacrylate) host
Yuksek, Mustafa; Kaya, Elif Celenk; Karabulutlu, Nur; Kaya, Ahmet Afsin; Karabulut, Mevlut; Elmali, Ayhan (Elsevier, 2019)Unlike the earlier nonlinear optical studies of single walled carbon nanotubes (SWCNTs) which were generally carried out as solvent, in this study, we established to deposit the unsoluble SWCNTs as homogeneous thin films ... -
Kinetic and in silico studies of hydroxy-based inhibitors of carbonic anhydrase isoforms I and II
Salmas, Ramin Ekhteiari; Mestanoglu, Mert; Durdagi, Serdar; Senturk, Murat; Kaya, A. Afsin; Kaya, Elif Celenk (Taylor & Francis Ltd, 2016)A series of hydroxy and phenolic compounds have been assayed for the inhibition of two physiologically relevant carbonic anhydrase (CA, EC 4.2.1.1) isozymes, the cytosolic human isozymes I and II. The investigated molecules ... -
Reaction of 9-oxabicyclo[4.2.1]non-7-ene-1-ol with tetrazine: An unusually facile intramolecular rearrangement
Kaya, Afsin A.; Salamci, Emine; Menzek, Abdullah; Erdem, Safiye S.; Sahin, Ertan; Ecer, Kadriye (Pergamon-Elsevier Science Ltd, 2017)Reaction of (1S(*), 7R(*))-9-oxabicyclo[4.2.1]non-7-en-1 -ol (5) with dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate (6) produced (2R(*),4R(*))-dimethyl 4-(7-oxooxepan-2-yl)-1,4-dihydropyridazine-3,6-dicarboxylate (11) in a ... -
Synthesis and characterisation of new metallophthalocyanines containing four 12-membered diazadithia-macrocyclic moieties
Kaya, Elif Celenk; Kantekin, Halit; Kaya, Afsin Ahmet; Dakoglu, Asuman; Oksuz, Sumeyra; Sisik, Hanife (Science Reviews 2000 Ltd, 2012)Tetrasubstituted zinc, cobalt, nickel, copper and lead phthalocyanines bearing four 12-membered diazadithia macrocyclic moieties on peripheral positions have been synthesised by cyclotetramerisation reaction of ... -
Synthesis and Determination of Some Biological Activities of Novel 2,4-Dinitrophenyl Derivatives
Sarikaya, Sevim B. Oezturk; Kaya, Afsin A.; Kaya, Elif Celenk; Sentuerk, Murat (Wiley-V C H Verlag Gmbh, 2015)The antioxidant and radical scavenging activities of the synthesized compounds 3, 5, and 6 were determined by various in vitro assays such as 2,2-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid radical (ABTS(+)) scavenging, ... -
Synthesis of cyclohexane derivatives including Br, Cl, N, O, and S at 1,2,4,5-positions: selectivity in addition reactions
Kaya, Afsin Ahmet; Menzek, Abdullah; Sahin, Ertan (Pergamon-Elsevier Science Ltd, 2014)Brominations of mono addition products of 1,4-cyclohexadiene with 2,4-dinitrobenzenesulfenyl chloride (RSCI) selectively gave 1R(S),2R(S),4R(S),5R(S)-4,5-dibromo-2-(2,4-dinitrophenylthio)cyclohexyl acetate and 1R(S),2R(S ... -
Synthesis, characterization and thermal behaviour of novel phthalocyanines bearing chalcone groups on peripheral positions
Kaya, A. A. (Bulgarian Acad Science, 2015)A new nickel, zinc, cobalt, copper and metal-free phthalocyanine was synthesized by nucleophilic aromatic substitution reaction of (E)-3-(3-hydroxyphenyl)-1-phenylprop-2-en-1-one with 4-nitrophthalonitrile and cyclotetramerisation ... -
Synthesis, spectroscopic characterization, X-ray structure and DFT calculations of Ni(II) bis(3,4 dimethoxybenzoate) bis(nicotinamide) dihydrate
Kaya, Elif Celenk; Kaya, Afsin Ahmet; Demircioglu, Zeynep; Buyukgungor, Orhan (Walter De Gruyter Gmbh, 2017)A single crystal of Ni(II) bis(3,4 dimethoxybenzoate) bis(nicotinamide) dihydrate, formulated as C-30 H-34 N-4NiO12 (I), was characterized in the solid state by infra-red (IR), ultra-violet (UV) and single crystal X-ray ... -
Synthesis, X-ray structural characterization, NLO, MEP, NBO and HOMO-LUMO analysis using DFT study of Zn(II)bis(3,4 dimethoxybenzoate) bis(nicotinamide) dihydrate
Kaya, Afsin Ahmet; Demircioglu, Zeynep; Kaya, Elif Celenk; Buyukgungor, Orhan (Walter De Gruyter Gmbh, 2014)A single crystal of Zn(II) bis(3,4 dimethoxybenzoate) bis(nicotinamide) dihydrate, formulated as C30H38N4O14 Zn, (I) has been obtained. According to experimental data, the complex can be characterized in the solid state ... -
Synthesis, X-Ray Structural, Characterization, NLO, MEP, NBO, and HOMO-LUMO Analysis Using DFT Study of Co(II)bis(3,4 dimethoxybenzoate)bis(nicotinamide) Dihydrate
Kaya, Elif Celenk; Demircioglu, Zeynep; Kaya, Afsin Ahmet; Buyukgungor, Orhan (Taylor & Francis Ltd, 2015)A suitable single crystal of Co(II)bis(3,4 dimethoxybenzoate)bis(nicotinamide) dihydrate, formulated as C30H38N4O14Co,(I). According to experimental data, the complex can be characterized in the solid state as mononuclear, ...