Browsing by Author "Çolak, Naki"
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4-[2-(2,2-Dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)hydrazin-1-yl] benzo-nitrile
In the title compound, C 13H 11N 3O 4, the dioxane ring adopts an envelope conformation with the C atom bonded to the dimethyl group in the flap position [deviation = 0.613 (1) Å]. The nitrile group and the attached benzene ... -
Amino tiyofen bileşiklerinden imin bileşiklerinin sentezlenmesi ve spektroskopik olarak incelenmesi
Altıner, Saliha (Hitit Üniversitesi Fen Bilimleri Enstitüsü, 2015)Bu çalışmada, çıkış maddesi olarak 4-metilsiklohekzanon ve 4-etilsiklohekzanon bileşiklerinin malononitril ile kükürt varlığında etkileştirilmesi sonucu Gewald yöntemi ile aminotiyofen grubu içeren bileşikler elde edildi. ... -
Aminotiyofen türevi maddelerin sentezi, bu maddelerin imidazolidin-2,4-dion ile diazolanarak kenetlenmesi ve korozyona karşı inhibitör etkinliklerinin incelenmesi
Ak, Yavuz (Hitit Üniversitesi Fen Bilimleri Enstitüsü, 2015)Bu çalışmada, 4-metilsiklohekzanon, N-etoksikarbonil-4-piperidon, N-metil-4-piperidon ve 4-fenilsiklohekzanon bileşiklerinden çıkılarak Gewald yöntemi ile aminotiyofen grubu içeren bileşikler sentezlendi. Sentezlenmiş olan ... -
Ethyl 2-[(2-hydroxybenzylidene)amino]-6-methyl-4,5,6,7-tetrahydrothieno[2, 3-c]pyridine-3-carboxylate
The title compound, C18H20N2O3S, exists as the phenol–imine form in the crystal and there are bifurcated intramolecular O—H…(N/O) hydrogen bonds present. The conformation about the C N bond is anti (1E); the C N imine bond ... -
Facile synthesis of the azocino[4,3-b]indole framework of strychnopivotine and other Strychnos alkaloids
Uludağ, Nesimi; Yılmaz, Recep; Asutay, Oktay; Çolak, Naki (Springer New York LLC, 2016)[Figure not available: see fulltext.]A new synthetic route to the 1,5-methanoazocino[4,3-b]indole is described. The aim of the present study is to provide a tetracyclic skeleton for the synthesis of pentacyclic Strychnos ... -
Fast method for synthesis of alkyl and aryl-N-methylnitrones
Yavuz, Serkan; Özkan, Hamdi; Çolak, Naki; Yıldırır, Yılmaz (MDPI AG, 2011)A simple, fast, efficient and eco-friendly procedure was developed for the synthesis of alkyl and aryl-N-methylnitrones. The corresponding nitrones of aromatic aldehydes, aliphatic aldehydes and alicyclic carbonyl compounds ... -
The inhibition of steel corrosion in acidic solutions by a new Schiff base
Bakırhan, Nurgül K.; Asan, Abdurrahman; Çolak, Naki; Şanlı, Senem (Sociedad Chilena de Quimica, 2016)The inhibition effect of 2,2?- (((thiobis (4,1 phenylene)) bis(azanylylidene)) bis(methanylyidene)) bis(4-methoxyphenol) (BIS-IMIN) on the corrosion behavior of 304-stainless steel (SS) in 0.5 M HCl solution was studied ... -
İmin bileşiklerinin eldesi, yapılarının aydınlatılması ve biyolojik aktivelerinin incelenmesi
Marım, Nazmiye (Hitit Üniversitesi Fen Bilimleri Enstitüsü, 2014)Bu çalışmada 1- metilpiperidin-4-on bileşiğinin etilsiyonaasetat ile etkileştirilmesiyle, etil 2-amino-6-metil-4,5,6,7-tetrahidroetieno(2,3-c)piridin -3- karbosiklat; 1- etilpiperidin -4-on bileşiğinin malonitril ile ... -
The photo-electrical properties of the p-Si/Fe(II)-polymeric complex/Au diode
Gündüz, Bayram; Turan, Nevin; Kaya, Esin; Çolak, Naki (2013)In this study, the Schiff base monomer was prepared by a common condensation method of salicylaldehyde and (E)-3-amino-4-((3-bromophenyl)diazenyl)-1H-pyrazol-5-ol. The poly(Schiff base) was synthesized from the oxidative ... -
Spectrophotometric determination of acidity constants of some novel methotrexate-like compounds in water and acetonitrile-water binary mixtures
Çolak, Naki; Şanlı, Senem; Şanlı, Nurullah (2010)The acidity constants of four novel methotrexate like compounds (NPALA; (N-[4-[[2-hydroxy -1-naphtyl)methylene]amino]benzoyl-?-alanin) TPALA; (N-[4-(2-thiophene-aldiminobenzoyl)-?-alanin), SAL-ALA; N-[4-[[2-hydroxyphenyl ... -
Spectroscopic properties of 2,2’-[Thiobis(p-phenylenenitrilo-methylidyne)]bis(4-chloro/bromo/methyl/nitro/methoxy)phenol
Çolak, Naki; Kuşçu, Volkan (Hacettepe University, 2012)Novel Schiff base has been synthesized from the reaction of 4,4’-diaminodiphenyl sulfide with 2-hydroxy5-substituebenzaldehyde and 2-hydroxynaphtaldehyde. The compounds were characterized by elemental analysis, FT-IR, 1 H ... -
Spectroscopic, antiproliferative and antiradical properties of Cu(II), Ni(II), and Zn(II) complexes with amino acid based Schiff bases
Karagöz Genç, Zuhal; Selçuk, Sibel; Sandal, Süleyman; Çolak, Naki; Keser, Serhat; Sekerci, Memet; Karatepe, Mustafa (Birkhauser Boston, 2014)Novel six Cu(II), Ni(II), and Zn(II) complexes with Schiff bases derived from 4-aminobenzoic acid with terephtaldehyde and amino acids (glycine, ?-alanine). Structures have been proposed from elemental analysis, UV-Vis, ... -
Study of structure and spectral characteristics of the Zinc(II) and Copper(II) complexes with 5,5-dimethyl-2-(2-(3-nitrophenyl) hydrazono)cyclohexane-1,3-dione and their effects on optical properties and the developing of the energy band gap and ınvestigation of antibacterial activity
Turan, Nevin; Gündüz, Bayram; Körkoca, Hanifi; Adıgüzel, Ragıp; Çolak, Naki; Buldurun, Kenan (Sociedad Quimica de Mexico A.C., 2014)A new chelating ligand, 5,5-dimethyl-2-(2-(3-nitrophenyl) hydrazono)cyclohexane-1,3-dione (L), and four transition metal complexes were synthesized. The ligand and its complexes were characterized by IR, 1H and 13C-NMR ... -
Synthesis and biological activity of new cycloalkylthiophene-Schiff bases and their Cr(III) and Zn(II) complexes
Altundaş, Aliye; Sarı, Nurşen; Çolak, Naki; Öğütcü, Hatice (Birkhauser Boston, 2010)A series of some novel Ethyl 2-((1-hydroxynaphthalen-2-yl)methyleneamino)- 5,6-dihydro-4H-cyclopenta[b]thiopehene-3-carboxylate, Ethyl 2-((1- hydroxynaphthalen- 2-yl)methyleneamino)-4,5,6,7-tetrahydrobenzo[b]thiophene-3- ... -
Synthesis and structures of Fe(II), Zn(II) and Pd(II) complexes with a schiff base derived from methyl 2-amino-6-methyl-4,5,6,7-tetrahydrothieno[2,3-c] pyridine-3-carboxylate and comparison of their optical constants for different solvents and molarities
Turan, Nevin; Buldurun, Kenan; Gündüz, Bayram; Çolak, Naki (American Scientific Publishers, 2017)Schiff base derived from condensation of o-vanillin (3-methoxysalicylaldehyde) and methyl 2-amino-6-methyl- 4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate and its metal complexes are synthesized and characterized ... -
Synthesis of bis(thiosemicarbazone) derivatives: Definition, crystal structure, biological potential and computational analysis
Ateş, Davut; Gülcan, Mehmet; Gümüş, Selçuk; Şekerci, Mehmet; Özdemir, Sadin; Şahin, Ertan; Çolak, Naki (Taylor and Francis Ltd., 2018)(2-(2-(2-methoxyphenyl)hydrazono)cyclohexane-1,3-diylidene) bis(hydrazine carbothioamide) (L1), 4-(2-(-2,-6-bis(2-carbamothioylhydrazono) cyclohexylidene) hydrazinyl)benzoic acid (L2), and (2-(2-(4-bromophenyl) hydrazono) ... -
Synthesis of some novel derivatives of 2,6-diaminoanthraquinone dyes
Yıldırır, Yılmaz; Canbolat, Melek; Dişli, Ali; Çolak, Naki (2008)In present study, some derivatives of 2,6-diaminoanthraquinone dyes are synthesized and their UV-visible spectra are investigated in various conditions. Ten compounds (1a-e) and (2a-e), two of which (1a, 1b) were previously ... -
Synthesis of {substituted-[(4-{[4-(carboxymethyl-carbamoyl)phenylimino] methyl}benzylidene)-amino]benzoylamino}carboxylic acids
Çolak, Naki; Yıldırır, Yılmaz (2008)Some novel derivatives of methotrexate like compounds 2a-f have been synthesized, using terephthalaldehyde, isophthalaldehyde, 4-aminobenzoic acid and amino acids (glycine, ?-alanine, L-glutamic acid). The structures of ... -
Synthesis, characterization of poly(E)-3-amino-4-((3-bromophenyl)diazenyl)-1H-pyrazol-5-ol: Investigation of antibacterial activity, fluorescence, and optical properties
The oxidative polycondensation reaction conditions of (E)-3-amino-4-((3-bromophenyl)diazenyl)-1H-pyrazol-5-ol (Schiff base monomer) has been accomplished using NaOCl, and air O 2 oxidants in an aqueous alkaline medium. The ... -
Synthesis, characterization of poly-2- (2-hydroxybenzylideneamino)-6- phenyl-4,5,6, 7-tetrahydrobenzo[b]thiophene-3-carbonitrile: Investigation of antibacterial activity and optical properties
The oxidative polycondensation reaction conditions of 2-(2- hydroxybenzylideneamino)-6-phenyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3- carbonitrile were examined. The magnitude of the reflectance of the polymer decreases ...
