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    5-Benzyl-4-[3-(1H-imidazol-1-yl)propyl]-2H-1,2,4-triazol-3(4H)-ones: Synthesis, spectroscopic characterization, crystal structure and a comparison of theoretical and experimental IR results by DFT calculations
    (Elsevier, 2009) Unver, Yasemin; Sancak, Kemal; Tanak, Hasan; Degirmencioglu, Ismail; Dugdu, Esra; Er, Mustafa; Isik, Samil
    The synthesis and structural properties of novel compounds, 5-Benzyl-4-[3-(1H-imidazol-1-yl)propyl]-2H-1,2,4-triazol-3(4H)-ones (3a-c) have been described. These products were obtained by the reaction of ethyl 2-[1-ethoxy-2-(phenyl or substituted phenyl)ethylidene]hydrazinecarboxylates (1) and N-(3-aminopropyl)imidazol (2). The structures of compounds 3a-c have been inferred through UV-vis, IR, H-1/C-13 NMR, mass spectrometry, elemental analyses, and X-ray crystallography. DFT level 6-31G*(d,p) calculations provided structural information and IR data that were in good agreement with experimental results for compound 3a. Additionally, the electronic structure of compound 3a has been studied by DFT level 6-31G*(d,p) calculations using the X-ray data. (C) 2009 Elsevier B.V. All rights reserved.
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    Synthesis and characterization of novel triazol compounds containing a thiophen ring as potential antifungal agents and the structure of 2-(2-hydroxy-2-p-tolyethyl)-5-(thiophen-2-ylmethyl)-4-(4H-1,2,4-triazol-4-yl)-2H-1,2,4-triazol-3(4H)-one
    (Tubitak Scientific & Technological Research Council Turkey, 2010) Unver, Yasemin; Dugdu, Esra; Sancak, Kemal; Er, Mustafa; Ustabas, Resat
    A series of new 4-(3,5-disubstitue-4H-1,2,4-triazol-4-yl)-5-(thiophen-2-yl-methyl)-2H-1,2,4-triazol-3(4H)-ones (3a-c) were obtained by reaction N'-1-ethoxy-2-thiophen-2-yl-ethylydene hydrazino carboxylic acid ethyl ester (1) and 4-amino-4H-1,2,4-triazoles (2). 4-(3,5-disubstitue-4H-1,2,4-triazol-4-yl)-2-(2-oxo-2-arylethyl)-5-(thiophen-2-yl-methyl)-2H-1,2,4-triazol-3(4H)-ones (4a-e) and ethyl 2-(4-(3,5-disubstitue-4H-1,2,4-triazol-4-yl)-5-oxo-3-(thiophen-2-ylmethyl)-4,5-dihydro-1,2,4-triazol-1-yl) acetates (6a-c) were obtained by reaction of compounds 3 and bromoacetophenon derivatives and bromo ethylacetate, respectively. Compounds 5a-e were synthesized from the reaction of corresponding compounds 4a-e with NaBH4. Compounds 7a-c were obtained by the reaction compounds 6 and LiAlH4. Seventeen new compounds were synthesized and characterized by elemental analyses, IR, H-1-NMR, and C-13-NMR spectral data. The structure of compound 5d was inferred through IR, H-1-, C-13-NMR, elemental analyses, and X-ray spectral techniques. In addition, the newly synthesized chemicals were screened for their antibacterial and antifungal properties. Among the chemicals tested, 6a and 6b exhibited the highest degree of antifungal activity.
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    The synthesis of some new imidazole and triazole derivatives: crystal Structure and DFT-TDDFT investigation on electronic structure
    (Springer, 2010) Sancak, Kemal; Unver, Yasemin; Tanak, Hasan; Degirmencioglu, Ismail; Dugdu, Esra; Er, Mustafa; Isyik, Samil
    A series of new N'-3-(1H-imidazol-1-yl)propylcarbamoyl-4-halogenebenzo hydrazonate (3a-b) were obtained by reaction Ethyl 2-((4-halogene phenyl) (ethoxy) methylene) hydrazinecarboxylate (1) and N-(3-aminopropyl)imidazole (2) at 120-140 A degrees C. Compounds (4a-b) were obtained by the reaction compound 1 and N-(3-aminopropyl)imidazole (2) at 160-180 A degrees C. The structures of compounds 3,4 have been inferred through UV-Vis, IR, H-1/C-13 NMR, mass spectrometry, elemental analyses, and X-ray crystallography. DFT level 6-31G (d) calculations provided structural information. The electronic structure of compound 3a has been studied by DFT level 6-31G (d) calculations using the X-ray data. The results are accordance with X-ray data.