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Toplam kayıt 467, listelenen: 1-20
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Synthesis of 4-Amino-4,5-dihydro-1H-1,2,4-triazole-5-ones and their Isatin-3-imine Derivatives
(MDPI, ST ALBAN-ANLAGE 66, 2005)Iminoester hidroklorürler 1 sentezlenmiştir. Bu bileşikler daha sonra ester etoksikarbonil hidrazonlar 2'ye dönüştürüldü ve bunlardan sırasıyla yeni bir ikame edilmiş 4-amino-4,5-dihidro-lH-1,2,4-triazol-5-onlar, 3 serisi ... -
N-H?N and C-H?? interactions in 4-amino-3-methyl-5-(p- tolyl)-4H-1,2,4-triazole and 4-amino-3-methyl-5-phenyl-4H-1,2,4-triazole
(2006)The title compounds, C10H12N4, (I), and C9H10N4, (II), have been synthesized and characterized both spectroscopically and structurally. The dihedral angles between the triazole and benzene ring planes are 26.59 (9) and ... -
Synthesis and properties of triazol-5-one substituted phthalocyanines by microwave irradiation
(TÜBİTAK, 2006)Triazol-5-one substituted phthalocyanines were prepared quickly by the reaction of 4-nitrophthalonitrile with anhydrous metal salts in DBU (1,8-diazabicyclo[5,4,0]undec-7-ene) and DMAE (dimethylaminoethanol) by microwave ... -
Microwave-assisted synthesis and characterization and theoretical calculations of the first example of free and metallophthalocyanines from salen type Schiff base derivative bearing thiophen and triazole heterocyclic rings
(Elsevier, 2007)Novel metal-free and metallophthalocyanine complexes of Co, Ni, Cu, and Zn have been synthesized by exposure to microwave irradiation and reflux conditions and the products purified by several techniques. The newly prepared ... -
Synthesis of some N-alkoxycarbonyl-N"-benzoyl-benzamidrazones(p- toluamidrazones) and 1,3,5-trisubstituted 1,2,4-triazole derivatives from N-benzoylimidates and their antimicrobial and anticancer screening studies
(Wiley, 2007)Some new N-alkoxycarbonyl-N?-benzoyl-benzamidrazones (p-toluamidrazones) 3a-3d, and 1,3,5-trisubstituted 1,2,4-triazole 4a-4h derivatives by starting from N-benzoylbenzimidates or N-benzoyl-p-toluimidates. The structures ... -
Microwave-assisted synthesis and characterization of novel metal-free and metallophthalocyanines containing four 14-membered tetraaza macrocycles
(Elsevier, 2007)The novel tetrasubstituted metal-free phthalocyanine (6) and metallophthalocyanines (7, 8) bearing four 14-membered tetraaza macrocycles moieties on peripheral positions have been synthesized by cyclotetramerization reaction ... -
Newly synthesized bentonite-histidine (Bent-His) micro-composite affinity sorbents for IgG adsorption
(Elsevier, 2007)Bentonite has several advantages for use as a support, including its lack of toxicity, chemical reactivity and hydrophilicity allowing easy fixation of biomolecules. A new approach was developed to obtain an efficient and ... -
A study on 4-acylamino-4,5-dihydro-1H-1,2,4-triazol-5-ones
(2007)Five novel 3-alkyl-4-phenylacetylamino-4,5-dihydro-1H-1,2,4-triazol-5-ones (2) were synthesized by the reactions of 3-alkyl-4-amino-4,5-dihydro-1H-1,2,4- triazol-5-ones (1) with phenylacetyl chloride and characterized by ... -
Microwave-assisted and conventional synthesis of new phthalocyanines containing 4-(p-fluorophenyl)-3-methyl-4,5-dihydro-1H-1,2,4-triazol-5-one moieties
(Elsevier, 2007)New metal-free and metal (Zn, Ni, Cu and Co) phthalocyanines containing 4-(p-fluorophenyl)-3-methyl-4,5-dihydro-1H-1,2,4-triazol-5-one moiety have been prepared from 1-(3,4-dicyanophenyl)-4-(p-fluorophenyl)-3-methyl-4,5- ... -
Characterization and pillaring of a Turkish bentonite (Resadiye)
(Elsevier, 2007)The shifts of the Si{single bond}O{single bond}Si stretching and the Si{single bond}O{single bond}Al and Si{single bond}O{single bond}Si bending modes, as well as the free silica peak in the IR spectra and the strengthening ... -
Structural characteristics of organo-modified bentonites of different origin
(Springer, 2007)Organobentonites were synthesized by treating Na-bentonites (Wyoming and Reşadiye) with cetylpyridinium chloride (CPC) using ion exchange method. The difference in the basal spacing by 0.65 Å and a higher mass loss by ... -
Determination of the protonation constants of some 4-(substituted benzylamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones by the potentiometric method in ethanol-water mixtures
(2007)To gain more information about the effect of solvent on 4,5-dihydro-1H-1,2,4-triazol-5-ones, the stoichiometric protonation constants of thirteen triazoles in ethanol-water mixtures were determined at an ionic strength of ... -
4-Amino-3,5-diethyl-4H-1,2,4-triazole at 100 K: Chains of edge-fused R 44(10) and R44(20) rings
(Wiley, 2007)The title compound, C6H12N4, has four crystallographically independent mol-ecules in the asymmetric unit. Inter-molecular N - H?N hydrogen bonds involving amino groups and triazole N atoms form a three-dimensional framework ... -
2'-[Eth-oxy(p-tol-yl)methyl-ene]acetohydrazide
(2007)Mol-ecules of the title compound, C12H16N2O2, are linked by N - H?O hydrogen bonds [N?O = 2.971 (2) Å, H?O = 2.17 (2) Å and N - H?O = 162 (2)°] into cyclic centrosymmetric R 2 2(8) dimers. © International Union of ... -
2'-[Eth-oxy(phen-yl)methyl-ene]acetohydrazide
(2007)The title compound, C11H14N2O2, contains two independent mol-ecules in the asymmetric unit. Each independent mol-ecule exists as part of an N - H?O hydrogen-bonded centrosymmetric dimer. © International Union of Crystallography ... -
4-(4-Allyl-2-meth-oxyphen-oxy)benzene-1,2-dicarbonitrile
(Wiley, 2007)In the title compound, C18H14N2O2, the dihedral angle between the two benzene rings is 88.6 (1)°. The allyl group is disordered over two orientations, with refined occupancies of 0.695 (6) and 0.305 (6). The meth-oxy group ... -
Preparation of bentonite-cysteine (Bent-Cys) Micro-composite affinity sorbents for ferritin adsorption
(2007)his study focused on developing bentonite-cysteine micro-composite «affinity sorbents (Bent-Cys) (38-105 |am) for Ferritin adsorption from aqueous solutions. The pseudo-specific affinity ligand L-cysteine was immobilized ... -
Microwave-assisted synthesis and antifungal activity of some new 1H-1,2,4-triazole derivatives
(Springer, 2008)A number of 3-aryl-4-arylmethylideneamino-4,5-dihydro-1H-1,2,4-triazol-5- ones were synthesized by reaction of the corresponding aromatic aldehydes with 4-amino-3-aryl-1H-1,2,4-triazol-5-ones in anhydrous ethanol under ... -
Binuclear transition metal complexes of a novel lateral ‒N-methylthiosemicarbazone through the central ethylene bridge: Synthesis, structural characterization and the response of ligand molecule to different solvent media
(Elsevier, 2008)The condensation of 2,2?-(2,3-bis((1-formylnaphthalen-2-yloxy)methyl)but-2-ene-1,4-diy l)bis(oxy)di-1-naphthaldehyde with 4-methyl thiosemicarbazide gave a novel N-methylthiosemicarbazone and then the reaction of this ... -
Ni(II), Cu(II), and Zn(II) complexes of tetradentate schiff base containing two thiadiazoles units: Structural, spectroscopic, magnetic properties, and molecular modeling studies
(Wiley, 2008)Four new mononuclear metal complexes with a mononucleating Schiff base ligand containing two thiadiazoles units have been synthesized. The ligand and metal complexes were characterized by elemental analyses, IR, 1H, and ...
