Yazar "Şengül, İbrahim Fazıl" için listeleme
-
Carbazole substituted BODIPY dyes: Synthesis, photophysical properties and antitumor activity
Şengül, İbrahim Fazıl; Okutan, Elif; Kandemir, Hakan; Astarcı, Erhan; Çoşut, Bünyemin (Elsevier Sci Ltd, 2015)In this study, two different BODIPYs containing carbazole groups at the mesa position were designed and synthesized. All compounds were fully characterized by elemental analysis, FT-IR, matrix-assisted laser desorption/ionization ... -
Experimental and theoretical studies of carbazole-based Schiff base as a fluorescent Fe3+ probe
Kandemir, Hakan; Koçak, Abdulkadir; Tumay, Süreyya Oguz; Cosut, Bunyemin; Zorlu, Yunus; Şengül, İbrahim Fazıl (Scientific Technical Research Council Turkey-Tubitak, 2018)Synthesis of a new (E)-N1-((9-ethyl-9H-carbazol-3-yl)methylene)-5-nitrobenzene-1,2-diamine as a fluorescent chemosensor for selective detection of Fe3+ ion over a number of other metal ions is described. The method for the ... -
Facile Synthesis of Some 3-(Benzimidazol-2-yl)- and 3,6-Di(Benzimidazol-2-yl)-9-ethyl-9H-carbazoles
Kandemir, Hakan; Şengül, İbrahim Fazıl (Taylor & Francis Inc, 2015)A simple and efficient synthesis of novel 3-(benzimidazol-2-yl)- and 3,6-di(benzimidazol-2-yl)-9-ethyl-9H-carbazoles is described. The synthetic approach for the preparation of 2-substituted benzimidazoles 4-8 and ... -
Light harvesting systems composed of carbazole based subphthalocyanine-BODIPY enhanced with intramolecular fluorescence resonance energy transfer (FRET)
Ecik, Esra Tanriverdi; Özcan, Emrah; Kandemir, Hakan; Şengül, İbrahim Fazıl; Cosut, Bunyemin (Elsevier Sci Ltd, 2017)A new series of subphthalocyanine-borondipyrromethene scaffolds containing N-ethylcarbazole moiety have been successfully designed and synthesized. The identities of synthesized compounds were confirmed by using H-1, C-13 ... -
Meso-piperidine linked bodipys: Synthesis, fluorescent properties and biological evaluation
Ecik, Esra Tanriverdi; Kazan, Hasan Huseyin; Şengül, İbrahim Fazıl; Kandemir, Hakan; Cosut, Bunyemin (Elsevier Science Bv, 2019)The synthesis and characterization of meso-piperidine linked Bodipy starting from 4-(2-(piperidine-1-yl)ethoxy) benzaldehyde was described. Meso-piperidine linked Bodipy was subsequently used for the construction of ... -
Naked-eye fluorescent sensor for Cu(II) based on indole conjugate BODIPY dye
Oğuz Tümay, Süreyya; Okutan, Elif; Şengül, İbrahim Fazıl; Özcan, Emrah; Kandemir, Hakan; Doruk, Tuğrul; Çoşut, Bünyemin (Pergamon-Elsevier Science Ltd, 2016)A novel on/off fluorescent indole/BODIPY-based Cu2+ chemosensor (3) was synthesized by Knoevenagel condensation of BODIPY derivative 1 with 2-methyl-indole-3-carbaldehyde 2. The identity of compound 3 was confirmed by H-1 ... -
Novel carbazole containing zinc phthalocyanine photosensitizers: Synthesis, characterization, photophysicochemical properties and in vitro study
Göksel, Meltem; Şengül, İbrahim Fazıl; Kandemir, Hakan; Durmuş, Mahmut (World Sci Publ Co Inc, 2016)Tetra and octa substituted novel zinc(II) phthalocyanines (3a and 5a) bearing carbazole groups were synthesized by cyclotetramerization of respective phthalonitrile derivatives (3 and 5). The zinc(II) phthalocyanines (3a ... -
Some electrophilic reactivity studies of di-(2-indolyl)dibenzofurans and di-(2-indolyl)carbazoles
Şengül, İbrahim Fazıl; Somphol, Kittiya; Kandemir, Hakan; Kumar, Naresh; Black, David StC. (Pergamon-Elsevier Science Ltd, 2014)3,6-Bis-(2-indolyl)dibenzofurans 1,2, and carbazoles 3-6 underwent a range of electrophilic substitution reactions to produce formyl indoles 7-12, biindolyls 24-28 and 33-34, glyoxylamides 40-42, and amides 48. (C) 2014 ... -
Synthesis of 7,7 '-Linked-Bis-Indoles Via 7-Tryptamines
Kandemir, Hakan; Şengül, İbrahim Fazıl; Gardner, Christopher R.; Werry, Eryn L.; Barron, Melissa L.; Kassiou, Michael; Black, David StC. (Pergamon-Elsevier Science Ltd, 2016)The synthesis of 7-tryptamines was accomplished via the reduction of 7-nitrovinylindoles which were developed by the condensation of indole-7-carbaldehydes with nitromethane and ammonium acetate. 7-Tryptamines were ... -
Synthesis of 7-azaindole based carbohydrazides and 1,3,4-oxadiazoles; Antioxidant activity, α-glucosidase inhibition properties and docking study
İzgi, S.; Şengül, İbrahim Fazıl; Şahin, E.; Koca, M.S.; Cebeci, F.; Kandemir, Hakan (Elsevier B.V., 2022)In this current work, 7-azaindole based 1,3,4-oxadiazoles have been successfully prepared by treatment of 3-(hydrazonomethyl)-7-azaindole with the different acyl chlorides or acetic anhydrides to give the corresponding ... -
Synthesis of a 7-(aminomethyl)indole and related bis-indole derivatives
Kandemir, Hakan; Şengül, İbrahim Fazıl; Kumar, Naresh; Black, David StC. (Arkat Usa Inc, 2016)A 7-(aminomethyl) indole is a useful precursor to form a new range of unsymmetrical and symmetrical 3-substituted amide-, imine-, and amine-linked 7,7'-bis-indoles. The reduction of an imine linked bis-indole leads to ... -
Synthesis of a novel N,N ',N '-tetraacetyl-4,6-dimethoxyindole-based dual chemosensor for the recognition of Fe3+ and Cu2+ ions
Şenkuytu, Elif; Bingül, Murat; Sağlam, Mehmet Turgut; Kandemir, Hakan; Şengül, İbrahim Fazıl (Elsevier Science Sa, 2019)A novel N,N'N',1-tetraacetyl-4,6-dimethoxy-1H-indole-2-carbohydrazide 5, bearing four N-acetyl groups (N-COCH3) as cation binding sites was successfully synthesized by the reaction of readily available 4,6-dimethoxy-1H-i ... -
Synthesis of dipyrrolo[2,3-a:1 ',2 ',3 '-fg]acridin-12(1H)-ones
Beyer, Renee L.; Kandemir, Hakan; Bhadbhade, Mohan; Şengül, İbrahim Fazıl; Leu, Chao-Wei; Wenholz, Daniel S.; Black, David StC. (Pergamon-Elsevier Science Ltd, 2018)Acylation reactions of 4,6-dimethoxyindoles with glyoxyloyl chlorides were achieved by the use of graphite powder in 1,2-dichloroethane at reflux. The products were monoketones as a result of decarbonylation, rather than ... -
Synthesis of Imine and Amine-Linked Macrocycles Containing Tris-Indoles
Kandemir, Hakan; Şengül, İbrahim Fazıl; Kumar, Naresh; Black, David StC. (Csiro Publishing, 2017)The synthesis of 21-membered imine-and amine-linked tris-indole macrocycles starting from 7-nitroethylindoles is described. The 7-nitroethylindoles are converted to 2,2'-diindolylmethanes and the nitro groups reduced to ... -
Synthesis of indole-2-carbohydrazides and 2-(indol-2-yl)-1,3,4-oxadiazoles as antioxidants and their acetylcholinesterase inhibition properties
Bingül, Murat; Sağlam, Mehmet Turgut; Kandemir, Hakan; Boga, Mehmet; Şengül, İbrahim Fazıl (Springer Wien, 2019)A range of novel 4,6-dimethoxy-1H-indole-2-carbohydrazides was prepared starting from methyl 4,6-dimethoxy-1H-indole-2-carboxylate which underwent cyclodehydration to generate the corresponding 2-(indol-2-yl)-1,3,4-oxadiazole ... -
Synthesis of Methylene Bridged Bis-pyrrolo[3,2-c]carbazoles via an Unusual Vilsmeier-Haack Product of N-Ethylcarbazole
Kandemir, Hakan; Sağlam, Mehmet Turgut; Şengül, İbrahim Fazıl (Taylor & Francis Ltd, 2020)The unexpected result for the formylation of N-ethylcarbazole under the Vilsmeier-Haack conditions (POCl3/DMF) led to the synthesis of novel methylene bridged bis-pyrrolo[3,2-c]carbazoles via Hemetsberger indole synthesis ... -
Synthesis of Novel Pyrrolo[3,2-c]carbazole and Dipyrrolo[3,2-c: 2 ',3 '-g]carbazole Derivatives
Şengül, İbrahim Fazıl; Astarcı, Erhan; Kandemir, Hakan (Georg Thieme Verlag Kg, 2016)Pyrrolocarbazole and dipyrrolocarbazoles have been synthesized via the Hemetsberger indole synthesis, starting from 9-ethyl carbazole-3-carbaldehyde and 9-ethylcarbazole-3,6-dicarbaldeyde, respectively. The pyrrolocarbazole ... -
Synthesis of pyrrolo[3,2-c]carbazole-2-carbohydrazides and pyrrolo[3,2-c]carbazol-2-yl-1,3,4-oxadiazoles and their in vitro antibacterial evaluation
Sağlam, Mehmet Turgut; Gündogdu, Aycan; Hora, Mehmet; Kandemir, Hakan; Şengül, İbrahim Fazıl (Taylor and Francis Ltd., 2021)A number of novel pyrrolo[3,2-c]carbazole-2-carbohydrazides 5a–d was prepared from readily available 6-methyl-1,6-dihydropyrrolo[3,2-c]carbazole-2-carboxylate 3 and underwent cyclodehydration to produce the corresponding ... -
Synthesis, characterization, UV-Vis absorption and cholinesterase inhibition properties of bis-indolyl imine ligand systems
Sağlam, Mehmet Turgut; Bingül, Murat; Şenkuytu, Elif; Boğa, Mehmet; Zorlu, Yunus; Kandemir, Hakan; Şengül, İbrahim Fazıl (Elsevier, 2020)A number of bis-indolyl imine helical structures has successfully been synthesized employing Schiff base reaction conditions starting from 4,6-dimethoxy-2,3-diphenylindole with different o-phenyl diamines as pi-spacer ... -
Synthesis, photophysical and antioxidant properties of carbazole-based bis-thiosemicarbazones
Bingül, Murat; Şenkuytu, Elif; Sağlam, Mehmet Turgut; Boga, Mehmet; Kandemir, Hakan; Şengül, İbrahim Fazıl (Springer, 2019)Utilizing Schiff base condensation of the 9-ethylcarbazole-3,6-dicarbaldehyde and thiosemicarbazides, four new N-ethylcarbazole-based bis-thiosemicarbazone compounds 4a-d were successfully synthesized in high yields. The ...