Relevant bibliographies by topics / Imidazol

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Imidazol'

Author: Grafiati
Published: 4 June 2021
Last updated: 27 April 2022

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Journal articles on the topic "Imidazol"

1

Ganguly, Swastika, Vatsal Vithlani, Anup Kesharwani, Ritu Kuhu, Lakshmanan Baskar, Papiya Mitramazumder, Ashok Sharon, and Abhimanyu Dev. "Synthesis, antibacterial and potential anti-HIV activity of some novel imidazole analogs." Acta Pharmaceutica 61, no. 2 (June 1, 2011): 187–201. http://dx.doi.org/10.2478/v10007-011-0018-2.

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Synthesis, antibacterial and potential anti-HIV activity of some novel imidazole analogs A series of 1-(2-methyl-4-nitro-imidazol-1-yl)-3-arylaminopropan-2-ones (2a-e), 2-methyl-5-nitro-1-{2-[arylmethoxy] ethyl}-1H-imidazoles (5a-d), and N-(3-hydroxyphenyl)-2-(substituted imidazol-1-yl)alkanamides (8a-e) were synthesized with the aim to develop novel imidazole analogs with broad-spectrum chemotherapeutic properties. Title compounds were evaluated for their anti-HIV and antibacterial activities.
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Zhou, Qifan, Fangyu Du, Yajie Shi, Ting Fang, and Guoliang Chen. "Synthesis and Analysis of 1-Methyl-4-Phenyl-1H-Imidazol-2-Amine." Journal of Chemical Research 42, no. 12 (December 2018): 608–10. http://dx.doi.org/10.3184/174751918x15414286606248.

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A practical synthetic route to an important pharmaceutical intermediate 1-methyl-4-phenyl-1H-imidazol-2-amine, via a three-step sequence involving cyclisation, hydrolysis and methylation, is reported. In the process of optimisation, a novel chemical entity was isolated and confirmed to be 2,6-diphenyl-1H-imidazo[1,2-a]imidazole by MS, 1H NMR and 13C NMR. The scale-up experiment was carried out to provide 1-methyl-4-phenyl-1H-imidazol-2-amine in 27.4% total yield.
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Lipson, Victoria V., Tetiana L. Pavlovska, Nataliya V. Svetlichnaya, Anna A. Poryvai, Nikolay Yu Gorobets, Erik V. Van der Eycken, Irina S. Konovalova, et al. "Novel (2-amino-4-arylimidazolyl)propanoic acids and pyrrolo[1,2-c]imidazoles via the domino reactions of 2-amino-4-arylimidazoles with carbonyl and methylene active compounds." Beilstein Journal of Organic Chemistry 15 (May 6, 2019): 1032–45. http://dx.doi.org/10.3762/bjoc.15.101.

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The unexpectedly uncatalyzed reaction between 2-amino-4-arylimidazoles, aromatic aldehydes and Meldrum’s acid has selectively led to the corresponding Knoevenagel–Michael adducts containing a free amino group in the imidazole fragment. The adducts derived from Meldrum’s acid have been smoothly converted into 1,7-diaryl-3-amino-6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-5-ones and 3-(2-amino-4-aryl-1H-imidazol-5-yl)-3-arylpropanoic acids. The interaction of 2-amino-4-arylimidazoles with aromatic aldehydes or isatins and acyclic methylene active compounds has led to the formation of pyrrolo[1,2-c]imidazole-6-carbonitriles, pyrrolo[1,2-с]imidazole-6-carboxylates and spiro[indoline-3,7'-pyrrolo[1,2-c]imidazoles], which can be considered as the analogues of both 3,3’-spirooxindole and 2-aminoimidazole marine sponge alkaloids.
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Balewski, Łukasz, Franciszek Sączewski, Patrick J. Bednarski, Lisa Wolff, Anna Nadworska, Maria Gdaniec, and Anita Kornicka. "Synthesis, Structure and Cytotoxicity Testing of Novel 7-(4,5-Dihydro-1H-imidazol-2-yl)-2-aryl-6,7-dihydro-2H-imidazo[2,1-c][1,2,4]triazol-3(5H)-Imine Derivatives." Molecules 25, no. 24 (December 14, 2020): 5924. http://dx.doi.org/10.3390/molecules25245924.

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The appropriate 1-arylhydrazinecarbonitriles 1a–c are subjected to the reaction with 2-chloro-4,5-dihydro-1H-imidazole (2), yielding 7-(4,5-dihydro-1H-imidazol-2-yl)-2-aryl-6,7-dihydro-2H-imidazo[2,1-c][1,2,4]triazol-3(5H)-imines 3a–c, which are subsequently converted into the corresponding amides 4a–e, 8a–c, sulfonamides 5a–n, 9, ureas 6a–I, and thioureas 7a–d. The structures of the newly prepared derivatives 3a–c, 4a–e, 5a–n, 6a–i, 7a–d, 8a–c, and 9 are confirmed by IR, NMR spectroscopic data, as well as single-crystal X-ray analyses of 5e and 8c. The in vitro cytotoxic potency of these compounds is determined on a panel of human cancer cell lines, and the relationships between structure and antitumor activity are discussed. The most active 4-chloro-N-(2-(4-chlorophenyl)-7-(4,5-dihydro-1H-imidazol-2-yl)-6,7-dihydro-2H-imidazo[2,1-c][1,2,4]triazol-3(5H)-ylidene)benzamide (4e) and N-(7-(4,5-dihydro-1H-imidazol-2-yl)-2-(p-tolyl)-6,7-dihydro-2H-imidazo[2,1-c][1,2,4]triazol-3(5H)-ylidene)-[1,1′-biphenyl]-4-sulfonamide (5l) inhibits the growth of the cervical cancer SISO and bladder cancer RT-112 cell lines with IC50 values in the range of 2.38–3.77 μM. Moreover, N-(7-(4,5-dihydro-1H-imidazol-2-yl)-2-phenyl-6,7-dihydro-2H-imidazo[2,1-c][1,2,4]triazol-3(5H)-ylidene)-4-phenoxybenzenesulfonamide (5m) has the best selectivity towards the SISO cell line and induces apoptosis in this cell line.
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Arduengo, Anthony J., Jens R. Goerlicha, Fredric Davidson, and William J. Marshall. "Carbene Adducts of Dimethylcadmium." Zeitschrift für Naturforschung B 54, no. 11 (November 1, 1999): 1350–56. http://dx.doi.org/10.1515/znb-1999-1102.

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The first examples of carbene-cadmium complexes are reported from the reactions of a variety of imidazol-2-ylidenes or imidazolin-2-ylidenes with dimethylcadmium. Four new carbene complexes are characterized by NMR spectroscopy (1H , 13C and 113Cd). The cadmium centers are strongly shifted downfield (100 -150 ppm) by interaction with the carbenes. X-ray structures are reported for three carbene-cadmium 1:1 adducts. The cadmium centers exhibit distorted trigonal-planar geometries in which the carbene ligands have an average 18.2 pm longer bond distance to cadmium compared to the methyl groups. The planes of cadmium coordination are twisted with respect to the plane of the imidazole ring. The more basic imidazolin-2-ylidene is shown to displace imidazol-2-ylidenes from the cadmium center.
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Demchenko, Sergii, Roman Lesyk, Oleh Yadlovskyi, Johannes Zuegg, Alysha G. Elliott, Iryna Drapak, Yuliia Fedchenkova, Zinaida Suvorova, and Anatolii Demchenko. "Synthesis, Antibacterial and Antifungal Activity of New 3-Aryl-5H-pyrrolo[1,2-a]imidazole and 5H-Imidazo[1,2-a]azepine Quaternary Salts." Molecules 26, no. 14 (July 13, 2021): 4253. http://dx.doi.org/10.3390/molecules26144253.

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A series of novel 3-aryl-5H-pyrrolo[1,2-a]imidazole and 5H-imidazo[1,2-a]azepine quaternary salts were synthesized in 58–85% yields via the reaction of 3-aryl-6, 7-dihydro-5H-pyrrolo[1,2-a]imidazoles or 3-aryl-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepines and various alkylating reagents. All compounds were characterized by 1H NMR, 13C NMR, and LC-MS. The conducted screening studies of the in vitro antimicrobial activity of the new quaternary salts derivatives established that 15 of the 18 newly synthesized compounds show antibacterial and antifungal activity. Synthesized 3-(3,4-dichlorohenyl)-1-[(4-phenoxyphenylcarbamoyl)-methyl]-6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-1-ium chloride 6c possessed a broad activity spectrum towards Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii, and Cryptococcus neoformans, with a high hemolytic activity against human red blood cells and cytotoxicity against HEK-293. However, compound 6c is characterized by a low in vivo toxicity in mice (LD50 > 2000 mg/kg).
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Parmar, Tejasvi H., Chetan B. Sangani, and Mahesh Kulkarni. "Synthesis of novel drug-like small molecules library based on 1." Australian Journal of Chemistry 75, no. 4 (April 8, 2022): 276–84. http://dx.doi.org/10.1071/ch21238.

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A series of novel ‘drug-like’ small molecules based on 1H-benzo[d]imidazole derivatives bearing furan-2-yl, 4-piperidine and 5-aryl/aminoaryl substitutions were designed and synthesised. The key intermediate tert-butyl-4-(5-bromo-2-(furan-2-yl)-1H-benzo[d]imidazol-1-yl)piperidine-1-carboxylate (5) was synthesised via sequential reaction starting from 4-bromo-1-fluoro-2-nitrobenzene (1). The 5-aryl-substituted molecular library was generated via Suzuki–Miyura coupling of tert-butyl-4-(5-bromo-2-(furan-2-yl)-1H-benzo[d]imidazol-1-yl)piperidine-1-carboxylate (5) with various boronic acids while Buchwald coupling of 5 with various anilines generated the second molecular library of tert-butyl-4-(2-(furan-2-yl)-5-(arylamino)-1H-benzo[d]imidazol-1-yl)piperidine-1-carboxylates. The structures of all the newly synthesised compounds were confirmed by spectral analysis. The optimised procedure gives easy access to two new molecular libraries of 1H-benzo[d]imidazoles with operational simplicity and good yield.
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Bhat, Mashooq Ahmad, Mohamed A. Al-Omar, Ahmed M. Naglah, Atef Kalmouch, and Abdullah Al-Dhfyan. "Synthesis and Characterization of Novel Biginelli Dihydropyrimidinone Derivatives Containing Imidazole Moiety." Journal of Chemistry 2019 (May 13, 2019): 1–7. http://dx.doi.org/10.1155/2019/3131879.

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Enaminone, (2E)-1-[4-(1H-imidazol-1-yl) phenyl]-4-methylpent-2-en-1-one (II) was synthesized by refluxing 1-[4-(1H-imidazol-1-yl) phenyl] ethan-1-one (I) with dimethylforamide dimethylacetal (DMF–DMA) under solvent-free condition for 12 hours. Finally, the dihydropyrimidinone derivatives containing imidazole moiety (1–15) were obtained by reacting enaminone, (2E)-1-[4-(1H-imidazol-1-yl) phenyl]-4-methylpent-2-en-1-one (II) with urea and different substituted benzaldehydes in the presence of glacial acetic acid. Dihydropyrimidinone derivatives containing imidazole moiety were synthesized in excellent yield by means of a simple and efficient method. All the compounds were confirmed by elemental analysis. The structures of all the compounds were confirmed by modern spectroscopic methods.
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Grieco, Gabriele, Olivier Blacque, and Heinz Berke. "A facile synthetic route to benzimidazolium salts bearing bulky aromatic N-substituents." Beilstein Journal of Organic Chemistry 11 (September 17, 2015): 1656–66. http://dx.doi.org/10.3762/bjoc.11.182.

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An atom-economic synthetic route to benzimidazolium salts is presented. The annulated polycyclic systems: 1,3-bis(2,4,6-trimethylphenyl)-1H-benzo[d]imidazol-3-ium chloride (1-Cl), 1,3-bis(2,6-diisopropylphenyl)-1H-benzo[d]imidazol-3-ium chloride (2-Cl), 1,3-diphenyl-1H-benzo[d]imidazol-3-ium chloride (3-Cl), and 1,3-di(pyridin-2-yl)-1H-benzo[d]imidazol-3-ium chloride (4-Cl) were prepared in a two-step synthesis avoiding chromatographic work-up. In the key step triethyl orthoformate is reacted with the correspondingN1,N2-diarylbenzene-1,2-diamines and then further transformed in situ, by alkoxy abstraction using trimethylsilyl chloride (TMSCl), and concomitant imidazole ring closure.
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Mlostoń, Grzegorz, Małgorzata Celeda, Katarzyna Urbaniak, Marcin Jasiński, Vladyslav Bakhonsky, Peter R. Schreiner, and Heinz Heimgartner. "Synthesis and selected transformations of 2-unsubstituted 1-(adamantyloxy)imidazole 3-oxides: straightforward access to non-symmetric 1,3-dialkoxyimidazolium salts." Beilstein Journal of Organic Chemistry 15 (February 19, 2019): 497–505. http://dx.doi.org/10.3762/bjoc.15.43.

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Adamantyloxyamine reacts with formaldehyde to give N-(adamantyloxy)formaldimine as a room-temperature-stable compound that exists in solution in monomeric form. This product was used for reactions with α-hydroxyiminoketones leading to a new class of 2-unsubstituted imidazole 3-oxides bearing the adamantyloxy substituent at N(1). Their reactions with 2,2,4,4-tetramethylcyclobutane-1,3-dithione or with acetic acid anhydride occurred analogously to those of 1-alkylimidazole 3-oxides to give imidazol-2-thiones and imidazol-2-ones, respectively. Treatment of 1-(adamantyloxy)imidazole 3-oxides with Raney-Ni afforded the corresponding imidazole derivatives without cleavage of the N(1)–O bond. Finally, the O-alkylation reactions of the new imidazole N-oxides with 1-bromopentane or 1-bromododecane open access to diversely substituted, non-symmetric 1,3-dialkoxyimidazolium salts. Adamantyloxyamine reacts with glyoxal and formaldehyde in the presence of hydrobromic acid yielding symmetric 1,3-di(adamantyloxy)-1H-imidazolium bromide in good yield. Deprotonation of the latter with triethylamine in the presence of elemental sulfur allows the in situ generation of the corresponding imidazol-2-ylidene, which traps elemental sulfur yielding a 1,3-dihydro-2H-imidazole-2-thione as the final product.
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Dissertations / Theses on the topic "Imidazol"

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Weiss, Andre. "Synthesen, Strukturen und Reaktivität von Imidazolyl- und Imidazol-boranen sowie von Diboryl- und Diboranyl(4)-porphyrinen." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965793702.

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Gonçalves, Marcos Brown. "Efeitos de estado sólido e ligações de hidrogênio sobre o gradiente de campo elétrico no núcleo no imidazol." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-09022007-124016/.

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Estudamos as propriedades eletrônicas, estruturais e hiperfinas, nos sítios de nitrogênio, para o composto imidazol nas fases gasosa e sólida. Utilizamos o método PAW que é um método ab initio all-electron, dentro da Teoria do Funcional da Densidade, através do código computacional CP-PAW. Nossos valores, tanto para a fase gasosa quanto para a fase cristalina do gradiente de campo elétrico no núcleo, de freqüência de acoplamento quadrupolar (ν) e parâmetro de assimetria (η) estão em ótima concordância com os resultados experimentais da literatura e são os primeiros resultados obtidos, por método ab initio no espaço recíproco, para os átomos de nitrogênio no imidazol cristalino. Utilizamos resultados da literatura e também aqui calculados para estudar a tendência de comportamento tanto de ν quanto de η para diferentes meros (um, dois, três, cadeia infinita) e cristal investigando, assim, a estreita influência das ligações de hidrogênio sobre os valores do Gradiente de Campo Elétrico nos núcleos de nitrogênio.
Here we study structural, electronic and hyperfine properties at the Nitrogen sites in imidazole in the gas and the crystal phases. We use the PAW method which is an ab initio all electron method in the framework of the Density Functional Theory, as embodied in the computer code CP-PAW. The results for quadrupole coupling (ν) and asymmetry parameter (η) at the gas and at the crystal phases are in excellent agreement with the experimental values in the literature. This is the first time that such calculations are performed for the crystalline imidazole through a reciprocal space approach. We also study the behavior of both ν and η trends studing diferent meres (one, two, three and infinite chain) and cristal to investigate the influence of hydrogen bonding on the Electric Field Gradient at the nucleus.
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Brendgen, Thomas. "Neuartige Imidazoliumsalze für die Erkennung von Anionen - Synthese, Selbstaggregation und Rezeptoreigenschaften." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:289-vts-65840.

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Orth, Elisa Souza. "Reações nucleofílicas de desfosforilação com imidazol e hidroxamato." Florianópolis, SC, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/95005.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011
Made available in DSpace on 2012-10-25T19:14:48Z (GMT). No. of bitstreams: 1 294692.pdf: 7569058 bytes, checksum: 36728c4993d0cc8522189bab2d223d90 (MD5)
Este trabalho detalha, por estudos de UV-Vis, 1H e 31P RMN, ESI-MS/MS e cálculos computacionais, algumas reações de interesse biológico, de desfosforilação com grupos nucleofílicos de reatividade excepcional: o hidroxamato e o imidazol, em diversos tipos de sistemas: intra- e intermolecular, polimérico, micelar e DNA plasmídico. Nas reações dos ésteres de fosfato (DEDNPP,EDNPP), confirmou-se a alta reatividade do benzohidroxamato BHO-, que envolve um ataque nucleofílico suicida, onde o nucleófilo de partida é destruído durante a reação, por um rearranjo de Lossen, formando produtos de baixa nucleofilicidade. O fármaco desferoxamina DFO, com três grupos hidroxamatos, também mostrou atividade nucleofílica na reação com BDNPP, que envolve intermediários fosforilados. Ainda, o DFO, amplamente utilizado para fins terapêuticos, foi ativo na quebra do DNA plasmídico em pH fisiológico, justificando a preocupação do uso deste fármaco. Outro interesse desse trabalho foi estudar reações com o grupo imidazol. A reação de hidrólise do diéster bis-imidazolil BMIPP foi estudada em detalhe, onde se corroborou a catálise bifuncional intramolecular nucleofílica-ácida-geral pelos grupos imidazol, envolvendo um intermediário fosforilado cíclico. Nas reações intermoleculares do imidazol IMZ com os ésteres de fosfato derivados do 2,4-dinitrofenol (DNPP, BDNPP, EDNPP, DEDNPP), se evidenciou o alto poder nucleofílico do IMZ. Foram detectados os intermediários fosforilados das reações estudadas, potenciais análogos das fosfohistidinas, e avaliadas suas estabilidades, que podem levar até 43 dias para quebrar. O nucleófilo bis-imidazolil BIMZ também se mostrou um bom nucleófilo na reação com DEDNPP, com os grupos imidazol atuando como catalisadores nucleofílicos. Ainda, os resultados confirmam o potencial catalítico do grupo imidazol ancorado na cadeia polimérica do polivinilimidazol PVI, nas reações com BDNPP e DEDNPP. PVI atua como uma enzima artificial, onde os grupos imidazol reagem por catálise nucleofílica ou bifuncional, por catálise nucleofílica-ácida geral. As reações com BIMZ e PVI foram estudadas na presença de micelas, a fim de avaliar efeitos de aproximação, recorrente nos sistemas enzimáticos, e os resultados mostram uma pronunciada catálise micelar, que surpreendentemente, ocorre tanto com micela catiônica (CTABr) quanto aniônica (SDS). Baseado no modelo de pseudofase propõe-se que os reagentes podem se incorporar na fase micelar por forças eletrostáticas e hidrofóbicas.
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Reis, Ana Beatriz da Costa. "Avaliação da atividade antimicrobiana de derivados do imidazol." Master's thesis, [s.n.], 2015. http://hdl.handle.net/10284/5344.

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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Ciências Farmacêuticas
A resistência aos agentes antimicrobianos é um problema crescente e representa um dos maiores desafios na área da saúde, pelo que é essencial a pesquisa e desenvolvimento de novas moléculas que possam constituir alternativas eficazes contra o tratamento de infeções, nomeadamente as provocadas por bactérias e por fungos. Os imidazóis pertencem ao grupo dos azóis e detêm um elevado potencial terapêutico, dada a presença do anel imidazólico na sua estrutura. Exibem propriedades anticancerígenas, antifúngicas, antiparasitárias, antihistamínicas, antihipertensoras e antineuropáticas. Neste trabalho foram estudadas as atividades antibacterianas e antifúngicas de diferentes séries de derivados do núcleo imidazólico estruturalmente relacionadas. As bactérias e fungos selecionados para a realização do estudo foram Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans, Candida krusei e Candida parapsilosis. Apenas uma das séries de compostos estudadas revelou atividade antifúngica. A série A exibiu 3 compostos ativos contra C. krusei. Os compostos 4 e 5 conseguiram inibir o crescimento de C. krusei a 50 μg/ml. O composto 7 conseguiu inibir o crescimento a uma concentração ≥ 100 μg/ml. Nenhuma outra série apresentou atividade antibacteriana ou antifúngica contra as bactérias e leveduras testadas. Em conclusão, os derivados do anel imidazólico estudados revelaram potencial terapêutico. Contudo, serão necessárias alterações estruturais de modo a potenciar a sua eficácia terapêutica.
Antimicrobial resistance is a growing problem and represents one of the biggest challenges in healthcare, which is why it is so important to reaserch and develop new molecules that could be effective alternatives to treat infections, particularly those caused by bacteria and fungi. Imidazoles belong to the class of azoles and retain a high therapeutic potencial given the presence of the imidazole ring in its composition. They have anticancer properties, antifungal, antiparasitic, anti and antihypertensive and antineuropathic. The antibacterial and antifungal activities of the imidazole derivates were screened against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans, Candida krusei e Candida parapsilosis. Only a subset of compounds displayed fair activity against C. krusei. Compounds 4, 5 and 7 from the A serie were able to inhibit the growth of C. krusei. No other series presented antibacterial or antifungal activity against bacteria and fungi tested. In conclusion, the imidazole derivates screened in this study revealed fair therapeutic potencial. However, structural changes are necessary in order to maximize its therapeutic efficacy.
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Kerscher-Hack, Silke [Verfasser]. "Synthese potentieller GABA-uptake-Inhibitoren mit 1H-Imidazol-4-ylessigsäure- und 3-(1H-Imidazol-2-yl)propansäure-Grundstruktur / Silke Gabriele Hack." München : Verlag Dr. Hut, 2011. http://d-nb.info/1014848482/34.

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Sweidan, Kamal. "Derivate des Imidazols und der Barbitursäure heterozyklische Carben-Fragmente mit p-Donor- und Akzeptor-Funktion = Imidazol and barbituric acid derivatives /." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=979465427.

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Scharfenberger, Gunter E. "Wasserfreie, polymere Protonenleiter für Brennstoffzellen durch Immobilisierung von Imidazol." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969561466.

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Figge, Axel. "Darstellung und Anwendung von P,N-Liganden mit Imidazol-Rückgrat." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=978283384.

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Gomes, Hallan Bruno de Matos Angeira. "Obtenção do copolímero de acrilonitrila e vinil-imidazol a partir da modificação química da poliacrilonitrila." Universidade do Estado do Rio de Janeiro, 2012. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3619.

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Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro
Polímeros contendo anéis heterocíclicos, como o imidazol, possuem um grande interesse comercial e científico devido ao seu emprego em diversas áreas. Esses polímeros podem ser obtidos pela modificação química de polímeros comerciais como a poliacrilonitrila. Geralmente, esse tipo de reação é realizada por aquecimento convencional (térmico). Entretanto, mais recentemente, a irradiação por micro-ondas também começou a ser utilizada como fonte de energia para esse fim. Nesta Dissertação foi estudada, comparativamente, a modificação química da poliacrilonitrila comercial com etilenodiamina sob ativação de P2S5, empregando como fonte de aquecimento: o método convencional (térmico) e irradiação de micro-ondas, geradas em forno de micro-ondas doméstico e em reator de micro-ondas (Discover CEM), para produzir o copolímero de poliacrilonitrila e 2-vinil-imidazol. As reações foram efetuadas em diferentes tempos reacionais, em diferentes temperaturas no reator de micro-ondas e em diferentes potências do forno doméstico. Os copolímeros produzidos foram caracterizados por espectroscopia na região do infravermelho (FTIR) e por ressonância magnética de núcleo de hidrogênio (NMR-1H). A poliacrilonitrila foi modificada quimicamente com sucesso em todos os métodos empregados, como foi verificado pela sua análise de FTIR. Os melhores resultados obtidos foram: em 48 h de aquecimento térmico, 20 min de irradiação de micro-ondas em forno doméstico e 20 min a 80C em reator de micro-ondas, no entanto todas as análises indicaram uma derivatização abaixo de 10 %
Polymers containing heterocyclic rings such as imidazole, have a great scientific and commercial interest due to its use in several areas. Such polymers can be obtained by chemical modification of polymers such as polyacrylonitrile commercial. Generally, this type of reaction is carried out by conventional heating (thermal). However, more recently, the microwave irradiation is also being used as an energy source for this purpose. This thesis was studied in comparison, the chemical modification of the commercial polyacrylonitrile with ethylenediamine under activation P2S5, using as the heating source, the conventional method (heat) and the microwave radiation generated in a microwave oven for domestic and reactor micro-wave oven (CEM Discover) to produce the copolymer of polyacrylonitrile and 2-vinyl-imidazole. The reactions were carried out at different reaction times, temperatures in the reactor at different microwave powers and different domestic oven. The copolymers produced were characterized by infrared spectroscopy (FTIR) and nuclear magnetic resonance of hydrogen nucleus (NMR-1H). The polyacrylonitrile was chemically modified with success in all methods employed, as verified by its FTIR analysis. The best results were as follows: 48 h of thermal heating 20 min of irradiation of microwaves in domestic oven and 20 min at 80 C in a microwave reactor, however all analyzes indicated a derivatization below 10%
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Books on the topic "Imidazol"

1

Preston, P. N. Condensed imidazoles: 5-5 ring systems. New York: Wiley, 1986.

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Grimmett, M. R. Imidazole and benzimidazole synthesis. London: Academic Press, 1997.

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Preedy, Victor R., ed. Imidazole Dipeptides. Cambridge: Royal Society of Chemistry, 2015. http://dx.doi.org/10.1039/9781782622611.

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Synthesis of imidazo[4,5-b]pyridines. Uppsala: Swedish University of Agricultural Sciences, Dept. of Chemistry, 1994.

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McMaster, Jonathan. Copper and Zinc complexes of bi-imidazole ligands. Manchester: University of Manchester, 1995.

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International Symposium on Agmatine and Imidazoline Systems (4th 2003 San Diego, Calif.). Agmatine and imidazolines: Their novel receptors and enzymes. New York: New York Academy of Sciences, 2003.

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Moon, Denise. Synthesis of fluorinated imidazoles and benzimidazoles. Birmingham: University of Birmingham, 1987.

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Bhalla, Rajiv. Copper and zinc complexes of Bis- and Tris-imidazole ligands. Manchester: University ofManchester, 1995.

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Al-duaij, O. Reactions of 5 amino-4-(formimidoyl) imidazoles. Manchester: UMIST, 1993.

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Kawamoto, Yusuke. Synthesis and Biological Evaluation of Pyrrole–Imidazole Polyamide Probes for Visualization of Telomeres. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6912-4.

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Book chapters on the topic "Imidazol"

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Schomburg, Dietmar, and Dörte Stephan. "3-(Imidazol-5-yl)lactate dehydrogenase." In Enzyme Handbook 9, 541–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-85200-8_106.

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Ramnial, Taramatee, and Jason A. C. Clyburne. "Imidazol-2-ylidenes and Their Reactions with Small Reagents." In ACS Symposium Series, 266–79. Washington, DC: American Chemical Society, 2005. http://dx.doi.org/10.1021/bk-2005-0917.ch019.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of dimanganese imidazol complex with bridging aqua and acetato groups." In Magnetic Properties of Paramagnetic Compounds, 1504–5. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49202-4_737.

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Bährle-Rapp, Marina. "Imidazole." In Springer Lexikon Kosmetik und Körperpflege, 277. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_5154.

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Gooch, Jan W. "Imidazole." In Encyclopedic Dictionary of Polymers, 900. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13980.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of cyclic-tetranuclear copper(II) complex with 4-[(imidazol-2-ylmethylidene)amino)ethyl]pyridine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 4, 806–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62474-6_319.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of imidazolate-bridged polynuclear copper(II) complex with 2-[(imidazol-2-ylmethylidene)amino)ethyl]pyridine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 4, 884–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62474-6_347.

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Sharma, Nilay, and Mihir Kumar Purkait. "Improving the Hydrophilicity of Polysulfone Membrane by the Addition of Imidazol with Polyvinyl Pyrrolidone for Crystal Violet Dye Removal." In Advances in Waste Management, 395–407. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0215-2_28.

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Rauf, Abdul, and Nida Nayyar Farshori. "Imidazoles." In SpringerBriefs in Molecular Science, 47–55. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1485-4_7.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of 2-(3-N-methylpyridinium)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl-3-N-oxide hexachlororhenate(IV)." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 1, 916–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62478-4_375.

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Conference papers on the topic "Imidazol"

1

FIRMINO CURTI, AUGUSTO, Andre Luiz Barboza Formiga, and MARCOS ANTONIO RIBEIRO. "Compostos de Coordenação de cobalto(II) e 2-(1H-imidazol-2-il)-fenol." In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Campinas - SP, Brazil: Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-51141.

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Liang, Cheng, ShuangLin Qin, Shuangping Huang, and Xiaoji Wang. "Study on Synthesis of 6-Pentyl-tetrahydro-thieno[3,4-d]imidazol-2-one." In 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnology. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/mmeceb-15.2016.162.

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Palermo, Mark G., Rohan Beckwith, Christopher S. Straub, Kara Herlihy, Yiping Shen, Xiaolu Zhang, Matthew Clapham, and Brian Hurley. "Abstract C54: Aryl-N-(1H-imidazol-2-yl)-acetamides: Nonpeptidic binders of Bir3 cIAP protein." In Abstracts: AACR-NCI-EORTC International Conference: Molecular Targets and Cancer Therapeutics--Oct 19-23, 2013; Boston, MA. American Association for Cancer Research, 2013. http://dx.doi.org/10.1158/1535-7163.targ-13-c54.

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Marupati, Siddhartha, Srinivasa Reddy Bireddy, Janardhan Eppakayala, Venkat Reddy Pendyala, and Laxminarayana Eppakayala. "An efficient and tandem synthesis of phenyl-1-benzyl-1h-benzo[d] imidazol-2-ylcarbamatesin PEG media." In NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0060857.

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Katunina N.P., Katunina N. P., Stratienko E. N. Stratienko E.N., Kuhareva O. V. Kuhareva O.V., Tseeva F. N. Tseeva F.N., and Katunin M. P. Katunin M.P. "The study of antihypoxic activity of new imidazol derivated compositions on the model of acute hypoxia with hypercapnia." In Global science. Development and novelty. НИЦ «Л-Журнал», 2018. http://dx.doi.org/10.18411/gdsn-28-02-2018-06.

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Santos Freisinger, Emilly, Maurício Marques Pinto da Silva, and Lucas Cassulatti dos Santos. "Uso do imidazol como inibidor de corrosão para o aço inoxidável AISI 439 em presença de chuva ácida sintética." In XXV Congresso de Iniciação Cientifica da Unicamp. Campinas - SP, Brazil: Galoa, 2017. http://dx.doi.org/10.19146/pibic-2017-78042.

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Hartrampf, P., S. Hahner, M. Nauerz, H. Hänscheid, M. Lassmann, M. Kroiß, M. Fassnacht, S. Samnick, AK Buck, and A. Schirbel. "(R)-1-[1-(4-[123/131I]Iodphenyl)ethyl]-1H-imidazol-5-carbonsäure azetidinylamid (IMAZA): ein neuer theranostischer Ansatz für das adrenokortikale Karzinom." In NuklearMedizin 2020. © Georg Thieme Verlag KG, 2020. http://dx.doi.org/10.1055/s-0040-1708130.

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NAKASHIMA, K., Y. OGATA, MN NAKASHIMA, and M. WADA. "HPLC WITH FLUORESCENCE DETECTION OF MORPHINE IN RAT PLASMA USING 4-(4,5-DIPHENYL-1H-IMIDAZOL-2-YL)BENZOYL CHLORIDE AS A LABEL." In Proceedings of the 13th International Symposium. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812702203_0060.

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Espinosa-Bustos, C., C. F. Lagos, J. Romero-Parra, J. Mella-Raipán, H. Pessoa- Mahana, G. Recabarren-Gajardo, and C. D. Pessoa-Mahana. "Synthesis and Docking of new (2-(2,5-dimethoxyphenyl)-1Hbenzo[ d]imidazol-1-yl)(aryl)methanone derivatives designed as novel cannabinoid CB1 receptor antagonists." In 14th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0169-1.

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Mokhtari Aliabad, Javad, Mehry Hosseini, Issa Yavari, and Morteza Rouhani. "A very efficient and convenient route for synthesis of imidazol-1-yl-acetic acid: the most important precursor for the synthesis of zoledronic acid." In The 20th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2016. http://dx.doi.org/10.3390/ecsoc-20-b013.

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Reports on the topic "Imidazol"

1

Sherrill, William M., and Eric C. Johnson. A New Method for the Production of Tetranitroglycoluril From Imidazo-[4,5-d]-Imidazoles With the Loss of Dinitrogen Oxide. Fort Belvoir, VA: Defense Technical Information Center, February 2014. http://dx.doi.org/10.21236/ada598881.

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Adigun, Risikat. Insight into the Reactivity of Metastasis Inhibitor, Imidazolium trans-[tetrachloro (dimethyl sulfoxide)(imidazole)ruthenate(III)], with Biologically-active Thiols. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.378.

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Ramakrishnan, V. T., M. Vedachalam, and J. H. Boyer. Dense Compounds of C, H, N, and O Atoms. 2. Nitramine and Nitrosamine Derivatives of 2-Oxo- and 2-Iminooctahydroimidazo(4,5-d)Imidazole. Fort Belvoir, VA: Defense Technical Information Center, July 1991. http://dx.doi.org/10.21236/ada238856.

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