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Relevant bibliographies by topics / 1,3,4-oxadiazole

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Journal articles

Academic literature on the topic '1,3,4-oxadiazole'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 May 2022

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Journal articles on the topic "1,3,4-oxadiazole"

1

Verma, Garima, Mohemmed F. Khan, Wasim Akhtar, Mohammad Mumtaz Alam, Mymoona Akhter, and Mohammad Shaquiquzzaman. "A Review Exploring Therapeutic Worth of 1,3,4-Oxadiazole Tailored Compounds." Mini-Reviews in Medicinal Chemistry 19, no. 6 (2019): 477–509. http://dx.doi.org/10.2174/1389557518666181015152433.

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1,3,4-Oxadiazole, a five-membered aromatic ring can be seen in a number of synthetic molecules. The peculiar structural feature of 1,3,4-oxadiazole ring with pyridine type of nitrogen atom is beneficial for 1,3,4-oxadiazole derivatives to have effective binding with different enzymes and receptors in biological systems through numerous weak interactions, thereby eliciting an array of bioactivities. Research in the area of development of 1,3,4-oxadiazole-based derivatives has become an interesting topic for the scientists. A number of 1,3,4-oxadiazole based compounds with high therapeutic poten

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2

Kumar, Sahil, Rakesh Narang, Manish Devgun, and Sukhbir Lal. "ANTIMICROBIAL ACTIVITY AND SAR OF 2,5-DISUBSTITUTED 1,3,4-OXADIAZOLE DERIVATIVES." Journal of Advanced Scientific Research 13, no. 01 (2022): 1–22. http://dx.doi.org/10.55218/jasr.202213101.

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1,3,4-oxadiazole is a five membered heterocyclic aromatic moiety, present in a number of antimicrobial agents. 2,5- disubstituted 1,3,4-oxadiazole derivatives have shown broad spectrum of antibacterial and antifungal activities. Many scientific groups have synthesized and screened their antimicrobial potential. Reported activity data showed that some 1,3,4-oxadiazole derivatives exhibited better activity than already known antibiotics. Hence, they can be used as lead for development of promising antimicrobial agents. In present review, antimicrobial activities and SAR of 2,5-disubstituted 1,3,

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3

Tawade, Bhausaheb V., Nitin G. Valsange, and Prakash P. Wadgaonkar. "Synthesis and characterization of polyhydrazides and poly(1,3,4-oxadiazole)s containing multiple arylene ether linkages and pendent pentadecyl chains." High Performance Polymers 29, no. 7 (2016): 836–48. http://dx.doi.org/10.1177/0954008316660368.

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A new diacylhydrazide monomer, namely, 4-(4-(4-(4-(hydrazinocarbonyl)phenoxy)-2-pentadecylphenoxy)phenoxy) benzohydrazide (HPPDPB), was synthesized starting from 4-(4-hydroxyphenoxy)-3-pentadecylphenol. HPPDPB was polycondensed with terephthalic acid chloride (TPC), isophthalic acid chloride (IPC) and a mixture of TPC and IPC (50:50 mol%) to obtain polyhydrazides containing multiple arylene ether linkages in the backbone and pendent pentadecyl chains. Polyhydrazides were subsequently cyclized in the presence of phosphorus oxychloride to obtain the corresponding poly(1,3,4-oxadiazole)s. Polyhyd

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4

Journal, Baghdad Science. "Synthesis and Characterization of 1,3,4-Oxadiazoles Derived From 9-Fluorenone." Baghdad Science Journal 10, no. 2 (2013): 449–61. http://dx.doi.org/10.21123/bsj.10.2.449-461.

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In the present work, 9-fluorenone-2-carboxylic acid methyl ester (1) was prepared from 9-fluorenone-2-carboxylic acid and then converted into the acid hydrazide (2). Compound (2), is the key intermediate for the synthesis of several series of new compounds such as substituted 1,3,4-oxadiazole derivatives (3-6) were synthesized from the condensation of different substituted benzoic acids with compound (2) using POCl3 as condensing agent. Treatment of compound (2) with formic acid gave the N-formyl hydrazide (7), which upon refluxing with phosphorous pentoxide in benzene yielded the correspondin

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5

Mercer, Frank W. "Synthesis and characterization of aromatic poly(ether ketone oxadiazole)s." High Performance Polymers 5, no. 1 (1993): 69–76. http://dx.doi.org/10.1088/0954-0083/5/1/007.

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A general method for the preparation of oxadiazole containing aromatic poly(ether ketone)s has been developed. Polymerization is based on a ketone-activated halo displacement in oxadiazole containing bis(4-fluorobenzoyl) moieties by phenoxides. 2,5-bis[4-(4-fluorobenzoyl-(4-phenoxyphenyl)]-1,3,4-oxadiazole was prepared by reaction of 4-fluorobenzoyl chloride with 2,5-bis(4-phenoxyphenyl)-1,3,4-oxadiazole in dichloromethane in the presence of aluminium chloride. Reaction of 2,5-bis[4-(4-fiuorobenzoyl)-(4-phenoxyphenyl)]-1,3,4-oxadiazole with diphenols in an aprotic solvent in the presence of po

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6

Liu, Chengbin, Ping Zhao, and Wei Huang. "New oxadiazole derivatives as promising electron transport materials: synthesis and characterization of thermal, optical and electrochemical properties." Open Chemistry 5, no. 1 (2007): 303–15. http://dx.doi.org/10.2478/s11532-006-0052-y.

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Abstract2,5-bis-(4-biphenyl)-yl-1,3,4-oxadiazole (1a), 2,5-bis-(4-(6,8-difluoro)-biphenyl)-yl-1,3,4-oxadiazole (1b) and 2,5-bis-(4-(spiro-fluorenyl)-phenyl)-yl-1,3,4-oxadiazole (1c) were designed, synthesized and characterized. 1a–c were easily obtained from Suzuki reactions between 2,5-bis-(4-bromo-phynyl)-[1,3,4]oxadiazole (2) and aromatic boronic acids (3). They were characterized by 1H-NMR, DSC, TGA, UV-Vis, photoluminescence (PL) spectrometry and CV. The melting temperatures (T m) of 1a–c are 237, 208 and 370 °C, respectively, much higher than that of 2-tert-butylphenyl-5-biphenyl-1,3,4-o

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7

Jin, Guoxia, Yuqi Ji, Teng Wang, et al. "Syntheses and characterization of dinuclear and tetranuclear AgI supramolecular complexes generated from symmetric and asymmetric molecular clips containing oxadiazole rings." Acta Crystallographica Section C Structural Chemistry 75, no. 10 (2019): 1327–35. http://dx.doi.org/10.1107/s2053229619011744.

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A new asymmetric ligand, 5-{3-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl}-2-(pyridin-3-yl)-1,3,4-oxadiazole (L5), which contains two oxadiazole rings, was synthesized and characterized. The assembly of symmetric 2,5-bis(pyridin-3-yl)-1,3,4-oxadiazole (L1) and asymmetric L5 with AgCO2CF3 in solution yielded two novel AgI complexes, namely catena-poly[[di-μ-trifluoroacetato-disilver(I)]-bis[μ-2,5-bis(pyridin-3-yl)-1,3,4-oxadiazole]], [Ag2(C2F3O2)2(C12H8N4O)2] n or [Ag2(μ2-O2CCF3)2(L1)2] n (1), and bis(μ3-5-{3-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl}-2-(pyridin-3-yl)-1,3,4-oxadiazole

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8

Wołek, Barbara, Mateusz Werłos, Magdalena Komander, and Agnieszka Kudelko. "Efficient Synthesis of Novel 1,3,4-Oxadiazoles Bearing a 4-N,N-Dimethylaminoquinazoline Scaffold via Palladium-Catalyzed Suzuki Cross-Coupling Reactions." Molecules 25, no. 21 (2020): 5150. http://dx.doi.org/10.3390/molecules25215150.

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Two series of novel (symmetrical and unsymmetrical) quinazolinylphenyl-1,3,4-oxadiazole derivatives were synthesized using palladium-catalyzed Suzuki cross-coupling reactions. The presented synthetic methodology is based on the use of bromine-substituted 2-phenyl-4-N,N-dimethylaminoquinazolines and either a boronic acid pinacol ester or a diboronic acid bis(pinacol) ester of 2,5-diphenyl-1,3,4-oxadiazole. The reactions are conducted in a two-phase solvent system in the presence of catalytic amounts of [1,1′-bis(diphenylphosphino)ferrocene]-dichloropalladium(II), sodium carbonate, and tetrabuty

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9

Makwana, Hitesh, and Yogesh T. Naliapara. "Synthesis, Characterization and Biological Evaluation of 2,5-di-Substituted 1,3,4-Oxadiazole Derivatives." International Letters of Chemistry, Physics and Astronomy 34 (May 2014): 48–54. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.34.48.

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We have reported some novel 1,3,4-oxadiazole synthesized by conventional method .The reaction of 5-bromothiophene-2-carbohydrazide and different benzoic acid derivatives reflux in toluene using phosphorus oxychloride as a catalyst, yielded a series of 2,5-di-substituted 1,3,4-oxadiazole HM-2a to HM-2t. The newly synthesized 2,5-di-substituted 1,3,4-oxadiazole were purified by column chromatography and characterized by IR, Mass, 1H NMR, 13C NMR spectroscopy and elemental analysis. All synthesized compounds were screened for antimicrobial activity using cup plate method. All the compounds showed

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10

Bruma, Maria, and Mariana-Dana Damaceanu. "Polyimides Containing 1,3,4-Oxadiazole Rings." Collection of Czechoslovak Chemical Communications 73, no. 12 (2008): 1631–44. http://dx.doi.org/10.1135/cccc20081631.

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Two series of polyimides containing 1,3,4-oxadiazole rings in the main chain, one of them having flexible hexafluoropropane-2,2-diyl groups and the other with carbonyl groups, were prepared by polycondensation of aromatic diamines containing 1,3,4-oxadiazole rings with hexafluoropropane-2,2-diyl-bis(phthalic anhydride) or benzophenonetetracarboxylic dianhydride. Their properties, such as solubility in organic solvents, thermal stability, glass transition temperature, photoluminescence and film-forming properties of the two groups of polymers have been studied and compared.

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