Yazar "Kahveci, Bahittin" için listeleme
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A aonvenient synthesis of Bisbenzimidazoles from iminoester hydrochlorides Via Microwave Technique
Kahveci, Bahittin; Menteşe, Emre; Özil, Musa; Yılmaz, Fatih; Serdar, Mevlüt (Wiley-Blackwell, 2016)A simple and practical method has been developed for the synthesis of bisbenzimidazoles. Iminoester hydrochlorides of phenylacetic acids were used as intermediates in this reaction with 3,3'-diaminobenzidine under microwave ... -
Bazı yeni potansiyel biyolojik 4-(Arylidenamino)-2, 4-dihidro-3H- 1,2,4-Triazol-3-one bileşiklerinin mikrodalga- destekli sentezi ve pKa değerlerinin belirlenmesi
Bu çalışmada,sekiz yeni bazı potansiyel biyolojik aktif 4-(arilidenamino)-2,4-dihidro-1H-1,2,4-triazol-3-on bileşikleri mikrodalga yöntemi kullanılarak sentezlendi. Bu bileşiklerin yapıları farklı spektroskopik yöntemle ... -
Design, synthesis, and biological evaluation of coumarin-triazole hybrid molecules as potential antitumor and pancreatic lipase agents
Kahveci, Bahittin; Yılmaz, Fatih; Menteşe, Emre; Ülker, Serdar (Wiley-V C H Verlag Gmbh, 2017)The design, synthesis, and investigation of antitumor and anti-lipase activities of some coumarin-triazole hybrid molecules are reported. the synthesis of these hybrid molecules was performed under microwave irradiation ... -
Determination of protonation constants of some 3-alkyl(aryl)-4-(ptert- butyl(benzyl/benzyliden)amino)-4,5-dihydro-1H-1,2,4-triazole-5- one deriveatives with spectrophotometric method
The protonation constant values of different twelve 3-alkyl(aryl)-4-(p-t-butyl(benzyl/ benzyliden)amino)-4,5-dihydro-1H-1,2,4-triazole-5-one derivatives have been determined in ethanol %50 - water %50 mixtures by ... -
Determination of the pKa of Some triazole derivatives by the potentiometric method in dioxan-water mixtures
İslamoğlu, Fatih; Kahveci, Bahittin (2011)Stoichiometric protonation constants of some 3-alkyl(aryl)-4-(substituted benzylamino)-4,5-dihydro-1 H-1,2,4-triazol-5-ones derivatives were determined potentiometrically in 50% (v/v) dioxan-water mixtures at 25°C with an ... -
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
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 ... -
Determination of the protonation constants of triazole derivatives in non-aqueous solvents
İslamoğlu, Fatih; Kahveci, Bahittin; Özil, Musa; Akyüz, Emine; Menteşe, Emre; Ekinci, Arife Pınar (2009)Different 17 triazole derivatives were titrated with tetrabutylammonium hydroxide in four non-aqueous solvents (isopropyl alcohol, rert-butyl alcohol, N,N-dimethylformamide and acetonitrile), using Potentiometric method. ... -
Ecofriendly solventless synthesis and reduction reaction of some triazole compounds and evaluation of their antimicrobial activity
Özil, Musa; Menteşe, Emre; Karaoğlu, Şengül Alpay; Kahveci, Bahittin (Taylor & Francis Inc, 2013)A number of triazole-3-one compounds have been synthesized, and reduction of the carbonyl group in the molecule has been carried out to give a corresponding hydroxyl group that possesses asymmetric carbon atom in good ... -
Effect of microwave irradiation on the synthesis of 1,2,4-triazol-3-one derivatives and their antimicrobial activities
Kahveci, Bahittin; Yılmaz, Fatih; Menteşe, Emre; Beriş, Fatih Şaban (Science Reviews 2000 Ltd, 2012)An easy efficient method for the synthesis of N-(3,5-dichlorophenyl)-5-alkyl/aryl-3H-1,2,4-triazol-3-one derivatives under microwave irradiation has been developed using the reaction of 3,5-dichloroaniline and ethoxycarb ... -
Efficient synthesis of 5-(substituted)benzyl-2,4-dihydro-3H-1,2,4-triazol- 3-ones using microwave irradiation
A growing body of literature has shown the effectiveness of using microwave irradiation in chemical reactions. The aim of this study is to demonstrate a rapid and highly efficient synthesis of some new 5-aryl-2,4-dihydro-3H-1,2,4- ... -
Efficient Synthesis of 5-(Substituted)benzyl-2,4-Dihydro-3H-1,2,4-Triazol-3-Ones Using Microwave Irradiation
Kahveci, Bahittin; Mentese, Emre; Ozil, Musa; Bekircan, Olcay (Chem Soc Pakistan, 2013)A growing body of literature has shown the effectiveness of using microwave irradiation in chemical reactions. the aim of this study is to demonstrate a rapid and highly efficient synthesis of some new 5-aryl-2,4-dihydro ... -
An efficient synthesis of benzimidazoles via a microwave technique and evaluation of their biological activities
Kahveci, Bahittin; Menteşe, Emre; Özil, Musa; Ülker, Serdar; Ertürk, Murat (Springer Wien, 2013)A simple and practical protocol was developed for the synthesis of benzimidazoles. the protocol uses iminoester hydrochloride which is very useful in the reaction with 4,5-dichloro-1,2-phenylenediamine under microwave ... -
An efficient synthesis of some new bisbenzimidazoles via microwave technique
2,2’-[1,4 (1,3)-Phenylenedi(methylene)]bis-1 H -benzimidazole derivatives were obtained from the reaction of 1,4- or (1,3)-bisiminoester hydrochloride and o -phenylenediamine derivatives under microwave irradiation. Ester ... -
Efficient synthesis ofbBenzimidazoles containing 1,2,4-triazol-3-one nucleus using microwave technique
Menteşe, Emre; Kahveci, Bahittin (Springer, 2016)A series of new compounds containing both benzimidazole and 1,2,4-triazol-3-one rings was synthesized by microwave irradiation of mixtures containing 5-(alkyl/phenyl)-4-(4-carboxyphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones ... -
Green protocol: Catalyst-free synthesis of 2-substituted benzimidazoles under ultrasound irradiation
Menteşe, Emre; Kahveci, Bahittin; Menteşe, Meltem (Science Reviews 2000 Ltd, 2018)The synthesis of 2-substituted benzimidazoles from the reaction of o-phenylenediamine and an imino ester hydrochloride with ultrasound irradiation is reported. The procedure has an eco-friendly and simple workup with good ... -
Green protocol: solvent- and catalyst-free synthesis of benzimidazole derivatives via microwave technique
Menteşe, Emre; Doğan, İnci Selin; Kahveci, Bahittin (Springer, 2013)A simple and green protocol has been developed for the synthesis of benzimidazoles. in this protocol, 2-[(alkyl/aryl)(ethoxy)methylidene]hydrazinecarboxylates with 1,2-phenylenediamine derivatives under solvent- and ... -
Microwave assisted synthesis and anti-lipase activity of some new fluorine-containing benzimidazoles
Menteşe, Emre; Yılmaz, Fatih; Ülker, Serdar; Kahveci, Bahittin (Georg Thieme Verlag Kg, 2015)In this study, a new series of fluorine containing benzimidazoles (4a-l) and bisbenzimidazoles (6a-c, 8) were synthesized by the reaction of o-phenylenediamines with iminoester hydrochlorides (3a-l, 7) in methanol under ... -
Microwave assisted synthesis of cournarins: A review from 2007 to 2018
Kahveci, Bahittin; Menteşe, Emre (Bentham Science Publ Ltd, 2018)Background: Microwave heating has been shown to be an invaluable technology for medicinal chemistry and drug discovery applications. Recently, it has been used for heterocyclic synthesis increasingly. This review article ... -
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
Kahveci, Bahittin; Özil, Musa; Kantar, Cihan; Şaşmaz, Selami; Işık, Şamil; Köysal, Yavuz (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- ... -
Microwave-assisted synthesis and antifungal activity of some new 1H-1,2,4-triazole derivatives
Kahveci, Bahittin; Özil, Musa; Menteşe, Emre; Bekircan, O.; Buruk, K. (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 ...