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Journal articles on the topic 'Debus-Radziszewski imidazole synthesis'

Author: Grafiati
Published: 7 June 2025
Last updated: 2 August 2025

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1

Sirviö, Juho Antti, Miikka Visanko, and Henrikki Liimatainen. "Synthesis of imidazolium-crosslinked chitosan aerogel and its prospect as a dye removing adsorbent." RSC Advances 6, no. 61 (2016): 56544–48. http://dx.doi.org/10.1039/c6ra08301c.

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2

Karun, Sodah, and Khilnani Veena. "DIVERSE SYNTHETIC APPROACHES TO CRAFT IMIDAZOLES - A REVIEW." International Journal of Advanced Research 12, no. 10 (2024): 199–216. http://dx.doi.org/10.21474/ijar01/19633.

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Imidazoles are five membered heterocyclic ring compounds containing two nitrogen atoms as a part of a five membered ring. Imidazole is a pharmacologically important molecule mainly used as antihypertensive, antiplasmodial, antifungal and anticancer agents etc. It can be synthesized by using a variety of starting materials by different synthesis such as – Debus Radziszewski, Van Leusen, Wallach synthesis to name a few. By altering the starting materials different derivatives of imidazole can be synthesized and show a wide range of pharmacological activites. Hence organic chemists are continuo
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3

Plater, M. John. "The crucial early contributions of F.R. Japp to a general synthesis of imidazole derivatives." Bulletin for the History of Chemistry 33, no. 2 (2008): 76–81. https://doi.org/10.70359/bhc2008v033p076.

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4

Isbera, Mostafa, Balázs Bognár, Gergely Gulyás-Fekete, Krisztina Kish, and Tamás Kálai. "Syntheses of Pyrazine-, Quinoxaline-, and Imidazole-Fused Pyrroline Nitroxides." Synthesis 51, no. 23 (2019): 4463–72. http://dx.doi.org/10.1055/s-0039-1690678.

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A synthesis of a new diamagnetic synthon, 1-methoxy-2,2,5,5-tetramethylpyrrolidine-3,4-dione, was developed. Condensation of this compound with aliphatic or aromatic 1,2-diamines followed by deprotection yielded pyrroline nitroxide-fused pyrazines, pteridines, or quinoxalines, demonstrated on 7 examples in 15–39% overall yield over 2 or 3 steps. Reaction of the diamagnetic 1,2-diketone with an aldehyde and ammonium acetate produced a pyrrolo[3,4-d]imidazole scaffold in the Debus–Radziszewski reaction.
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5

Ramanathan, N.*1 Nivetha B.2 Praveen Kumar K. C.3 Raghul Gandhi P.4 Ragul E.5 RajKumar N.6. "Synthesis, Characterisation, Biological Evaluation and Analogizing the Antimycotic Activity of 2,4,5-Triphenylimidazole Derivatives." International Journal of Pharmaceutical Sciences 3, no. 3 (2025): 324–32. https://doi.org/10.5281/zenodo.14986869.

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Microwave Assisted Synthesis (MWAS) technique which significantly lowers the chemical waste and reaction time. MWAS has been utilized to synthesize the 2,4,5-Triphenylimidazole by Debus-Radziszewski imidazole synthesis. From the literature survey, 2,4,5-Triphenylimidazole derivatives were synthesized under MWAS using Benzil, Ammonium Acetate and Aldehydes like Benzaldehyde, 4-chlorobenzaldehyde,                               4-Nitrobenzaldehyde a
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6

BOSTANCI, Hayrani Eren, and Ulviye ACAR ÇEVİK. "Design and Synthesis of Imidazole Derivatives as Anticancer Agents and Potential Aromatase Inhibitors." Cumhuriyet Science Journal 43, no. 4 (2022): 590–93. http://dx.doi.org/10.17776/csj.1131485.

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In this study, imidazole derivative compounds were synthesized using the Debus-Radziszewski method. The chemical structures of the compounds were characterized by spectroscopic methods. The effects of target compounds on MCF7 (CRL-3435) were examined and their IC50 values and percent viability were calculated. In addition, the cytotoxic effects on the L929 (CCL-1) normal cell line were evaluated in order to determine the selectivities of the compounds. Then, the inhibition values of aromatase enzyme of the compounds were calculated and compared to the reference compound. When the results were
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7

Sedghi, Roya, Bahareh Heidari, Hatef Shahmohamadi, Pourya Zarshenas, and Rajender S. Varma. "Pd Nanocatalyst Adorned on Magnetic Chitosan@N-Heterocyclic Carbene: Eco-Compatible Suzuki Cross-Coupling Reaction." Molecules 24, no. 17 (2019): 3048. http://dx.doi.org/10.3390/molecules24173048.

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A novel magnetic-functionalized-multi-walled carbon nanotubes@chitosan N-heterocyclic carbene-palladium (M-f-MWCNTs@chitosan-NHC-Pd) nanocatalyst is developed in two steps. The first step entails the fabrication of a three-component cross-linking of chitosan utilizing the Debus–Radziszewski imidazole approach. The second step comprised the covalent grafting of prepared cross-linked chitosan to the outer walls of magnetically functionalized MWCNTs (M-f-MWCNTs) followed by introducing PdCl2 to generate the m-f-MWCNTs@cross-linked chitosan with a novel NHC ligand. The repeated units of the amino
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8

SHARMA, JYOTSNA, HARDEEP SINGH TULI, MAYANK KINGER, RAM PAL, ZAHOOR ABBAS, and MANOJ KUMAR. "Synthesis, Characterization and Biological Screening of Novel Imidazolylpyrazole Scaffolds." Asian Journal of Chemistry 34, no. 3 (2022): 614–18. http://dx.doi.org/10.14233/ajchem.2022.23570.

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A novel series of 3-(4-aryl)-4-(4,5-diphenyl-1H-imidazol-2-yl)-1-phenyl-1H-pyrazole was synthesized by employing the well-known Debus-Radziszewski reaction. Structures of all the newly synthesized compounds have been characterized by various spectroscopic techniques viz. FTIR, 1H and 13C NMR, LC-MS and elemental analysis. All these compounds were also screened for antimicrobial potential against bacterial strains of S. aureus, K. pneumoniae and fungal strains of A. niger and T. rubrum.
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9

Sun, Wei, Mingjuan Zhang, Peilang Li, and Yiqun Li. "One-Pot Synthesis of Polysubstituted Imidazoles Based on Pd(OAc)2/Ce(SO4)2/Bi(NO3)3 Trimetallic Cascade of Decarboxylation/Wacker-Type Oxidation/Debus–Radziszewski Reaction." Synthesis 51, no. 17 (2019): 3221–30. http://dx.doi.org/10.1055/s-0037-1611835.

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A novel and highly efficient one-pot synthesis of polysubstituted imidazoles from α-hydroxyphenylacetic acids, diphenylacetylene, and amines has been achieved by Pd(OAc)2/Ce(SO4)2/Bi(NO3)3 trimetallic catalytic system. A series of control experiments showed that this overall reaction occurs through a one-pot cascade process combining the steps of decarboxylation of α-hydroxyphenylacetic acids, Wacker-type oxidation of diphenylacetylene, and Debus–Radziszewski annulation of aryl aldehydes and benzil generated in situ, as well as amines. This reaction represents a novel multicomponent reaction u
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10

Wang, Qing-Dong, Jin-Ming Yang, Bin Zhou, Dong Fang, Jiangmeng Ren, and Bu-Bing Zeng. "Highly Regioselective Debus-Radziszewski Reaction of C-3 Indole-Substituted 1,2-Diketones: Facile Synthesis of 3-(1,2,4-Triaryl-1H -imidazol-5-yl)-indoles." ChemistrySelect 2, no. 17 (2017): 4807–10. http://dx.doi.org/10.1002/slct.201700612.

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11

da Silva, Flavia Martins, Joel Jones Junior, July A. Hernández Muñoz, and Priscila Nogueira de Azevedo. "Sustainable synthesis of imidazoles using a catalyst-free approach and ethyl lactate as a bio-based green solvent in the Debus-Japp-Radziszewski reaction." Synthetic Communications 54, no. 7 (2024): 592–99. http://dx.doi.org/10.1080/00397911.2024.2323999.

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12

Hieu, Tran Trung, Vo Cong Dung, Nguyen Thi Chung, and Dau Xuan Duc. "Recent Achievement in the Synthesis of Imidazoles." Current Organic Chemistry 27 (October 18, 2023). http://dx.doi.org/10.2174/0113852728259414231010050749.

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Abstract: Imidazole derivatives, which belong to 1,3-diazole family, have two nitrogen atoms at 1 and 3 positions in the aromatic ring. Imidazole derivatives diversely appear both in nature and synthetic sources. Some natural imidazoles play important roles in human life such as histidine, histamine and biotin. Imidazole-based compounds possess a wide range of bioactivities such as those including antimicrobial, anticancer, antiparasitic, antihypertensive, antineuropathic and anti-inflammatory activities. Many compounds with imidazole skeleton have been marketed as drugs in the market. The syn
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13

Pandya, Keyur M., Janki Patel, Arpan H. Patel, Navin B. Patel, and P. S. Desai. "Substituted Imidazole-pyrazole clubbed scaffolds: Microwave assisted Synthesis and Examined their In-vitro Antimicrobial and Antituberculosis Effects." Letters in Organic Chemistry 17 (August 19, 2020). http://dx.doi.org/10.2174/1570178617999200819164729.

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A series of substituted imidazole-pyrazole fused compounds were designed & fused synthesized by employing Debus-Radziszewski one-pot synthesis reaction. Azoles are an extensive and comparatively new class of synthetic com-pounds including imidazoles and pyrazoles.The current clinical treatment uses compounds of azole framework. Azoles act by inhibiting ergosterol synthesis path way (a principal component of the fungal cell wall). In addition, a literature review shows that the compounds that include imidazoles and pyrazoles have significant anti-bacterial and anti-mycobacterial ef-fects. I
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14

Maikhuri, Vipin K., Vineet Verma, Divya Mathur, Ashok K. Prasad, Ankita Chaudhary, and Rajesh Kumar. "Sugars in Multicomponent Reactions: A Toolbox for Diversity-Oriented Synthesis." Synthesis, March 2, 2023. http://dx.doi.org/10.1055/s-0042-1751418.

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AbstractMulticomponent reactions (MCRs) cover strategically employed chemical transformations that incorporate three or more reactants in one pot leading to a functionalized final product. Thus, it is an ideal tool to achieve high levels of complexity, diversity, yields of desired products, atom economy, and reduced reaction times. Sugars belong to the class of naturally occurring compounds with fascinating applications in the field of drug discovery due to the presence of various hydroxy groups and well-defined stereochemistry. However, their potential in MCRs has been realized only recently.
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15

R Romanov, Alexey, Evgeniy V Kondrashov, and Sergey V Zinchenko. "Synthesis of 5-(trifluoroacetyl)imidazoles from bromoenones and benzimidamides via Aza-Michael Initiated Ring Closure Reaction." Current Organic Synthesis 20 (April 20, 2023). http://dx.doi.org/10.2174/1570179420666230420100643.

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Introduction: A simple method for the preparation of 5-(trifluoroacetyl)imidazoles was elaborated. background: The existing common methods for the construction of imidazole ring include Van Leusen synthesis, Bredereck synthesis, Wallach synthesis, Debus-Radziszewski synthesis, Groebke-Blackburn-Bienaymé condensation, and their numerous modifications. As a rule, the formation of imidazole core occurs via cyclization reaction from various building blocks. Thus, the reported substrates having one or more electrophilic centers are α-dicarbonyl compounds, (α-haloalkyl)ketones, α,β-unsaturated carbo
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16

Zhang, Yuting, Zelong Qiao, Rui Zhang, et al. "Multicomponent Synthesis of Imidazole‐Linked Fully Conjugated 3D Covalent Organic Framework for Efficient Electrochemical Hydrogen Peroxide Production." Angewandte Chemie, October 25, 2023. http://dx.doi.org/10.1002/ange.202314539.

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The semiconducting properties and applications of three dimensional (3D) covalent organic frameworks (COFs) are greatly hampered because of their long‐ranged non‐conjugated skeletons and relatively unstable linkages. Here, a robust imidazole‐linked fully conjugated 3D covalent organic framework (BUCT‐COF‐7) is synthesized through the one‐pot multicomponent Debus‐Radziszewski reaction of the saddle‐shaped aldehyde‐substituted cyclooctatetrathiophene, pyrene‐4,5,9,10‐tetraone, and ammonium acetate. The semiconducting BUCT‐COF‐7, as a metal‐free catalyst, shows excellent two electron oxygen reduc
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17

Zhang, Yuting, Zelong Qiao, Rui Zhang, et al. "Multicomponent Synthesis of Imidazole‐Linked Fully Conjugated 3D Covalent Organic Framework for Efficient Electrochemical Hydrogen Peroxide Production." Angewandte Chemie International Edition, October 25, 2023. http://dx.doi.org/10.1002/anie.202314539.

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The semiconducting properties and applications of three dimensional (3D) covalent organic frameworks (COFs) are greatly hampered because of their long‐ranged non‐conjugated skeletons and relatively unstable linkages. Here, a robust imidazole‐linked fully conjugated 3D covalent organic framework (BUCT‐COF‐7) is synthesized through the one‐pot multicomponent Debus‐Radziszewski reaction of the saddle‐shaped aldehyde‐substituted cyclooctatetrathiophene, pyrene‐4,5,9,10‐tetraone, and ammonium acetate. The semiconducting BUCT‐COF‐7, as a metal‐free catalyst, shows excellent two electron oxygen reduc
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18

Moharrer Navaei, Niloufar, and Narvan Moharrer Navaei. "Unlocking the potential of aromatase inhibitors: recent advances in drug design, synthesis, docking activity, and in vitro bioactivity evaluations." Synthesis and Sintering 3, no. 4 (2023). http://dx.doi.org/10.53063/synsint.2023.34183.

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Breast cancer, a global health concern claiming approximately 685,000 lives in 2020, necessitates continual advancements in therapeutic strategies. Estrogen and aromatase play pivotal roles in hormone-responsive breast cancer, with 80% of patients exhibiting estrogen receptor-positive tumors. Aromatase inhibitors (AIs), notably non-steroidal inhibitors like anastrozole and letrozole, have significantly improved outcomes, yet challenges persist, including side effects. This review focuses on recent developments in AIs, exploring xanthone derivatives, imidazole derivatives, and curcumin derivati
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19

Amaya-García, Fabián, Lena Schittenhelm, and Miriam M. Unterlass. "High-temperature water unlocks urea as nitrogen-source towards imidazoles." Green Chemistry, 2024. http://dx.doi.org/10.1039/d4gc01705f.

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