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Journal articles on the topic '4-oxadiazole'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Solet, Sanwar Mal, Neetesh Kumar Sharma, and Raghvendra Singh Bhadauria. "Synthesis of 2, 5-disubstituted-1, 3, 4-oxadiazole derivatives." Journal of Drug Delivery and Therapeutics 9, no. 4-A (2019): 528–60. http://dx.doi.org/10.22270/jddt.v9i4-a.3514.

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Synthesis of a series of various 2, 5-disubstituted-1, 3, 4-oxadiazole derivatives (7a-7u) have been done. Synthesis of a series of intermediates (3a-3c and 5a-5c) have been also done, ethyl-2-phenoxyacetate (3a), ethyl 2-(2, 4-dichlorophenoxy)acetate (3b), ethyl 2-(4-nitrorophenoxy) acetate (3c), 2-phenoxyacetohydrazide (5a), 2-(2, 4-dichlorophenoxy) acetohydrazide (5b), 2-(4-nitrophenoxy)acetohydrazide (5c), and final product (7a-7u), 2-(phenoxymethyl)-5-phenyl-1, 3, 4-oxadiazole (7a), 4-(5-(phenoxymethyl)-1, 3, 4-oxadiazol-2-yl)aniline (7b), 3-(5-(phenoxymethyl)-1, 3, 4-oxadiazol-2-yl) anil

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2

Solet, Sanwar Mal, Neetesh Kumar Sharma, and Raghvendra Singh Bhadauria. "Biological Evaluation of Novel Synthesized 2, 5-disubstituted-1, 3, 4-oxadiazole derivatives." Journal of Drug Delivery and Therapeutics 9, no. 4-A (2019): 573–76. http://dx.doi.org/10.22270/jddt.v9i4-a.3522.

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Synthesis of a series of various 2, 5-disubstituted-1, 3, 4-oxadiazole derivatives (7a-7v) have been done previously. These novel synthesized derivatives (7a-7v) have been tested for their antibacterial activity against Gram +ve S. aureus and Gram -ve E. Coli bacterias by broth dilution method. A comparative study has been done for all derivatives. Based on the visual turbidity, the MIC of the evaluated molecules has been studied, the evaluation concentration was used single therefore, the exact MIC could not determined and results are represented in less than and more than based on growth of

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3

Bandeira, Gustavo Neto, Claudio Augusto Gomes da Camara, Marcílio Martins de Moraes, João Paulo Ramos de Melo, João Rufino de Freitas Filho, and Jucleiton José Rufino de Freitas. "Synthesis and Insecticidal Activity of 1,2,4-Oxadiazoles Derivates against (Plutella xylostella L.) Diamondback Moth." Archives of Current Research International 25, no. 1 (2025): 283–92. https://doi.org/10.9734/acri/2025/v25i11058.

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The diamondback moth (Plutella xylostella) is a cosmopolitan pest known for its destruction of cruciferous plants. Commercial insecticides, such as Decis 25 EC and Azamax, are the main forms of controlling this pest in irrigated systems in the agricultural communities of the city of Garanhuns (northeastern Brazil). However, the difficulty in controlling this pest resides in its high fecundity and short lifecycle, which serve as resistance mechanisms to insecticides. Considering the immediate need to find alternative products to insecticides employed in these agricultural communities, nine 1,2,

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4

Stepanova, Elena V., and Andrei I. Stepanov. "UNUSUAL WAY OF REACTION OF 3-AMINO-4-(5-CHLOROMETHYL-1,2,4-OXADIAZOLE-3-YL)-FURAZAN WITH HYDRAZINE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 4 (2017): 26. http://dx.doi.org/10.6060/tcct.2017604.5522.

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The results of our study of the pathways of selective reactivity of 3-amino-4-(5-chloromethyl-1,2,4-oxadiazole-3-yl)furazan versus 5-unsubstituted or 5-methyl and 5-trifluoromethyl substituted 4-(5R-1,2,4-oxadiazole-3-yl)furazans (R = H, Me, CF3) towards the action of hydrazine are discussed. If the reductive opening of 1,2,4-oxadiazole ring in unsubstituted at the С-5 atom (1,2,4-oxadiazol-3-yl)furazan derivatives under the treatment with hydrazine can be used as a method for the preparation of a range of amidrazones of 4-R-furazan-3-carboxylic acid. 3-amino-4-(5-trifluoromethyl-1,2,4-oxadiaz

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5

Górecki, Sebastian, and Agnieszka Kudelko. "Synthesis and Characterization of Novel 2-Alkyl-1,3,4-Oxadiazoles Containing a Phenylazo Group." Molecules 29, no. 18 (2024): 4316. http://dx.doi.org/10.3390/molecules29184316.

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An efficient method for the synthesis of novel phenylazo-containing moieties is described. The derivatives of 5-(4-(phenyldiazenyl)phenyl)-1,3,4-oxadiazole, substituted at position 2 of the heterocyclic scaffold with alkyl groups of different chain lengths, were prepared. The titled compounds were obtained using the appropriate 4-(5-alkyl-1,3,4-oxadiazol-2-yl)anilines, which were directed to diazotization and subsequently coupled to phenol, resorcinol, and N,N-dimethylaniline. Additionally, we report a mild and effective procedure for the preparation of 4-(5-alkyl-1,3,4-oxadiazol-2-yl)anilines

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6

Nisheeth, Rastogi, and Anil Harrison Darwin. "Synthesis and antifungal activity of some new derivatives of 5-{ 4' -(2" ,4"- dichlorobenzyloxy)-phenyl }-1 ,3,4-oxadiazole-2(3H)-thione." Journal of Indian Chemical Society Vol. 89, Nov 2012 (2012): 1543–50. https://doi.org/10.5281/zenodo.5771647.

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Department of Chemistry, Lucknow Christian Post-Graduate College, Lucknow-226 018, Uttar Pradesh, India <em>E-mail </em>: nisheethrastogi2003@gmail.com <em>Manuscript received 06 June 2011, revised OJ February 2012, accepted 08 February 2012</em> 5-{ 4'-(2" ,4" -Dichlorobenzyloxy)-phenyl}-1,3,4-oxadiazole-2(3<em>H</em>)-thione (2) was prepared by the reaction of 4- (2' ,4' -dichlorobenzyloxy)-benzoylhydrazine (1) with potassium isopropylxanthate in isopropyl alcohol. 5-{ 4' -(2" ,4"- Dichlorobenzyloxy)-phenyl}-1,3,4-oxadiazole-2(3<em>H</em>)-thione (2) on be

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7

Saini, Sachin. "Synthesis and Anticonvulsant Studies of Thiazolidinone and Azetidinone Derivatives from Indole Moiety." Drug Research 69, no. 08 (2018): 445–50. http://dx.doi.org/10.1055/a-0809-5098.

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Abstract2-Amino-5-(3’-indolomethylene)-1, 3 , 4 - oxadiazole (3) undergoes facile condensation with various aromatic aldehydes to gave 2-substitiuted arylidenylamino-5-(3’- indolomethylene) – 1, 3 , 4 – oxadiazole (4–8). Cyclocondensation of (4–8) with thioglycolic acid and triethylamine yielded 3-[5’-(3”- indolomethylene)- 1’, 3’, 4’- oxadiazol-2’-yl]- 2- (substituted aryl)-4- thiazolidinones (9–13) and 1-[5’-(3”- indolomethylene) -1’, 3’, 4’- oxadiazol - 2’- yl ] -4-(substituted aryl) -2- azetidinones (14–18). The structures of these compounds were established on the basis of analytical and

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8

R., Sapthagiri, Sriram R., Ilavarasan L., and Ravi A. "SYNTHESIS AND CHARACTERIZATION OF 2-AMINO-1, 3, 4-OXODIAZOLE DERIVATIVES." International Journal of Applied and Advanced Scientific Research 1, no. 2 (2017): 61–65. https://doi.org/10.5281/zenodo.258975.

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A simple protocol for the synthesis of 2-amino-1, 3, 4-oxadiazole derivatives using iodoaceticacid as a cyclodesulfurization agent. This method is also applicable to the synthesis of various substituted 2-amino-1, 3, 4-oxadiazole derivatives such as 5-(2-bromophenyl)-N-phenyl-1, 3, 4-oxadiazol-2-amine. The synthesized methodology was simple and hazardless, it’s giving good yield.

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9

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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10

Farah, Deeba, Abbas Naeem, Tahir Butt Muhammad, Ahmad Khan Rauf, Muneeb Ahsan Muhammad, and Ain Khan Misbahul. "Synthesis, characterization and biological activities of 1,3,4-oxadiazole derivatives of nalidixic acid and their copper complexes." Chemistry International 4, no. 4 (2018): 206–15. https://doi.org/10.5281/zenodo.1475387.

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A series of novel 1, 3, 4-oxadiazole analogues was synthesized from cyclization of hydrazones of substituted 1-ethyl-1,4-dihydro-7-methyl-4-oxo-1,8-naphthyridine-3-carbohydrazides were prepared from nalidixic acid. The structures of synthesized oxadiazole derivatives and their copper complexes were elucidated on the basis of FTIR, elemental analyses, 1H-NMR and atomic absorption spectral analysis. It was observed from spectral data that metal ligand ratio was 1:1 in all copper complexes and they were bidentate, coordination was found to be done through oxygen of 4-oxo group and nitrogen of oxa

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11

Chunduru, Srinivasa Rao, Venkata Ramana Reddyy Ch., Jyotsna C., and S. Sait Shakil. "Synthesis of 3-[5-(morpholinomethyl/piperidinomethyl/pyrrolidinemethyl)-1 ,2 ,4- oxadiazol-3-yl]-4H-chromones." Journal of Indian Chemical Society Vol. 90, Sep 2013 (2013): 1461–66. https://doi.org/10.5281/zenodo.5790902.

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Department of Chemistry, JNTU, Kukatpally, Hyderabad-500 085, India Dr. Reddy Laboratories, Bachupally, Hyderabad-500 090, India <em>E-mail </em>: chemistrycsr@gmail.com <em>Manuscript received online 04 November 2012, revised 05 December 2012, accepted 30 December 2012</em> 5-(Chloromethyl)-3-(4<em>H</em>-chromen-3-yl)-1,2,4-oxadiazole (1a-e) react with pyrrolidine (6) to give 3-(4<em>H</em>-chromen-3-yl)-5-(pyrrolidin-1-ylmethyl)-1,2,4-oxadiazole (7a-e), (1a-e) react with piperidine (4) to give 1-{[3-(4<em>H</em>-chromen-3-yl)- 1,2,4-oxadiazol-5-yl]methyl}piperidine (5a-e) and (1a-e) react w

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12

El-Sayed, Wael A., Farag A. El-Essawy, Omar M. Ali, Barsis S. Nasr, Mohamed M. Abdalla, and Adel A. H. Abdel-Rahman. "Anti-HIV Activity of New Substituted 1,3,4-Oxadiazole Derivatives and their Acyclic Nucleoside Analogues." Zeitschrift für Naturforschung C 64, no. 11-12 (2009): 773–78. http://dx.doi.org/10.1515/znc-2009-11-1203.

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A number of new 5-[(naphthalen-5-yloxy)methyl]-1,3,4-oxadiazole derivatives, 2 - 5 and 8 - 11, were synthesized. The 2-{5-[(naphthalen-5-yloxy)methyl]-1,3,4-oxadiazol-2-ylthio}acetohydrazones 6a and 6b were synthesized by the reaction of the hydrazide 4 with the corresponding monosaccharides. Cyclization of the sugar hydrazones 6a and 6b with acetic anhydride afforded the substituted oxadiazoline derivatives 7a and 7b. The synthesized compounds were evaluated for their antiviral activity against, the human immunodefi ciency virus (HIV-1) and some of these compounds showed moderate to high anti

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13

Tang, Yongxing, Chunlin He, Lauren A. Mitchell, Damon A. Parrish, and Jean'ne M. Shreeve. "Energetic compounds consisting of 1,2,5- and 1,3,4-oxadiazole rings." Journal of Materials Chemistry A 3, no. 46 (2015): 23143–48. http://dx.doi.org/10.1039/c5ta06898c.

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3-Nitroamino-4-(5-amino-1,3,4-oxadiazol-2-yl)furazan monohydrate (2·H<sub>2</sub>O), which is a combination of the nitroaminofurazan and 1,3,4-oxadiazole rings, was obtained by the nitration of 3-amino-4-(5-amino-1,3,4-oxadiazol-2-yl)furazan (1) with 100% nitric acid.

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14

Ahsan, Mohamed Jawed, Arun Choupra, Rakesh Kumar Sharma, et al. "Rationale Design, Synthesis, Cytotoxicity Evaluation, and Molecular Docking Studies of 1,3,4-oxadiazole Analogues." Anti-Cancer Agents in Medicinal Chemistry 18, no. 1 (2018): 121–38. http://dx.doi.org/10.2174/1871520617666170419124702.

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Background: 1,3,4-Oxadiazole heterocycles possess a broad spectrum of biological activities. They were reported as potent cytotoxic agents and tubulin inhibitors; hence it is of great interest to explore new oxadiazoles as cytotoxic agents targeting tubulin polymerization. Objective: Two new series of oxadiazoles (5a-h and 12a-h) were synthesized, structurally related to the heterocyclic linked aryl core of IMC-038525, NSC 776715, and NSC 776716, with further modification by incorporating methylene linker. Method: The 2,5-disubstituted-1,3,4-oxadiazoles (5a-h and 12a-h) were synthesized by ref

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15

Rachel, Mathew* V. .S. Anjana Ayoona Najeeb Fathima Shereen S. Nikhila Anna Anil Saranya B. Sarin Santhosh. "COMMENCEMENT SCRUTINY OF 1,3,4-OXADIAZOLE; ITS VISCERAL ACTIVITIES." International Journal in Pharmaceutical Sciences 2, no. 5 (2024): 1265–74. https://doi.org/10.5281/zenodo.11264100.

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Oxadiazoles are a class of heterocyclic aromatic chemical compound of the azole family.1,3,4-oxadiazole is a nitrogen and oxygen containing heterocyclic derivative in which nitrogen in 3rd and 4th positions and oxygen in 1st position with chemical formula, C2 H2N2O and molecular weight 70.051g.mol-1. 1,3,4- oxadiazole is also known asOxdiazole,1-Oxa-3,4diazacyclopentadiene. 1,3,4- oxadiazole and its derivatives were used by several chemists for therapeutic conditions because it posses many pharmacological activities. 1,3,4- oxadiazole and its derivatives have great significance in medicinal ch

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16

Mercer, F. W. "Aromatic Poly(ether imide oxadiazole)s." High Performance Polymers 4, no. 2 (1992): 73–80. http://dx.doi.org/10.1088/0954-0083/4/2/002.

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Two oxadiazole containing aromatic diamines were synthesized. The diamines were prepared by reaction of aminophenols with 2,5-bis(4-fluorophenyl)-4l3,4-oxadiazole in a polar aprotic solvent in the presence of potassium carbonate. Reaction of the resulting 2,5-bis(4-(aminophenoxy)phenyl)-1,3,4-oxadiazoles with dianhydrides gave a series of polymeric amic acids. Thermal treatment yielded poly(imide ether oxadazole) films which displayed good thermal stability, flexibility, and glass transition temperatures ranging from 241 to 344C. The dielectric constants of the films were characterized as a fu

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17

Amer, Hamada, Omar Ali, Akram Salama, Marwa gendy та Omima Houssin. "Synthesis of some new 1,3,4-oxadiazole derivatives bearing sugars and α-aminophosphonate derived from 4-nitrophenol as anticancer agents". National Journal of Physiology, Pharmacy and Pharmacology 2, № 1 (2018): 1275. https://doi.org/10.5455/njppp.2018.8.0416408052018-1.

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Background: 1,3,4-oxadiazoles square measure a very important category of heterocyclic compounds with a broad variety of biological activities such as medicament, analgesic, ulcerogenicity, apoptosis inducer, anti-mycobacterial, antifungal, antitumor, P-glycoprotein Inhibitors, pesticides, 4-hydroxylase inhibitors, and antiepileptic drug activity. Aims and Objectives: The present study is undertaken to study the evaluation of new 1,3,4-oxadiazole derivatives bearing sugars and α-aminophosphonate derived from 4-nitrophenol as anticancer agents. Materials and Methods: A sequence of acyclic nucle

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18

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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19

Lata, Suman, Lucky Choudhary, Komalpreet Kaur, Shivani Bharti, and Vikrant Abbot. "Synthesis of 4-hydroxy-2H-chromene-2-one and 1,3,4-oxadiazole hybrids as potential antioxidant and antibacterial agents." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 02 (2025): 385. https://doi.org/10.59467/ijhc.2025.35.385.

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A new series of 4-hydroxy-3-(2-(5-phenyl-1,3,4-oxadiazol-2-ylamino)ethyl)-2H-chromen-2-one derivatives (4a-4e) was synthesized by the hybrid approach and evaluated for antioxidant and antibacterial activity. The antibacterial results revealed that derivatives 4d and 4e exhibited superior activity compared to ciprofloxacin, a commonly used standard antibacterial agent. These findings highlight the promising pharmacological profile of the synthesized coumarin-oxadiazole hybrids, particularly as potent antibacterial and antioxidant agents, which warrants further investigation for potential therap

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20

Mohammadi-Khanaposhtani, Maryam, Kiana Fahimi, Elahe Karimpour-Razkenari, et al. "Design, Synthesis and Cytotoxicity of Novel Coumarin-1,2,3-triazole-1,2,4- Oxadiazole Hybrids as Potent Anti-breast Cancer Agents." Letters in Drug Design & Discovery 16, no. 7 (2019): 818–24. http://dx.doi.org/10.2174/1570180815666180627121006.

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Background: This work reports design, synthesis, and in vitro cytotoxicity of novel coumarin-1,2,3-triazole-1,2,4-oxadiazole hybrids against three breast cancer cell lines MCF-7, MDA-MB-231, and T-47D. Methods: Synthetic procedure for the preparation of desired compounds was started from the reaction of coumarins or with propargyl bromide to give O-propargylated coumarins or 5. Then, click reaction between the later compounds and 3-aryl-5-(chloromethyl)-1,2,4-oxadiazoles afforded the desired products in good yields. Results: Among the synthesized compounds, 4-((1-((3-(4-chlorophenyl)-1,2,4-oxa

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21

Parameshwaraiah, Sindhu M., Zhang Xi, Akshay Ravish, et al. "Development of an Environment-Friendly and Electrochemical Method for the Synthesis of an Oxadiazole Drug-Scaffold That Targets Poly(ADP-Ribose)Polymerase in Human Breast Cancer Cells." Catalysts 13, no. 8 (2023): 1185. http://dx.doi.org/10.3390/catal13081185.

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The development of environment-friendly new Poly-adenosine diphosphate (ADP)-ribose Polymerase (PARP) inhibitors are highly essential because of their involvement in the survival of cancer cells. Therefore, a library of indazolyl-substituted-1,3,4-oxadiazoles known to inhibit PARP in cancer cells was synthesized by a green protocol. Furthermore, the cytotoxic effects of these compounds were evaluated in human MCF-7 breast cancer (BC) cells, which revealed that the compound 2-(3-bromo-4-nitrophenyl)-5-(1-methyl-1H-indazol-3-yl)-1,3,4-oxadiazole (8) inhibited viability with an IC50 value of 1.57

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22

Epishina, Margarita A., Alexander S. Kulikov, and Leonid L. Fershtat. "4-Amino-3-(1-{[amino(3-methyl-2-oxido-1,2,5-oxadiazol-4-yl)methylene]hydrazinylidene}ethyl)-1,2,5-oxadiazole 2-Oxide." Molbank 2022, no. 3 (2022): M1425. http://dx.doi.org/10.3390/m1425.

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Functionally substituted 1,2,5-oxadiazole 2-oxides (furoxans) are important pharmaceutical scaffolds used for the preparation of various pharmacologically active substances. Furoxans bearing hydrazone functionality are considered as promising drug candidates for the treatment of neglected diseases. However, pharmacologically oriented hydrazones derived from (furoxanyl)amidrazones and acetylfuroxans have remained unknown so far. In this communication, a simple method for the synthesis of 4-amino-3-(1-{[amino(3-methyl-2-oxido-1,2,5-oxadiazol-4-yl)methylene]hydrazinylidene}ethyl)-1,2,5-oxadiazole

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23

Nikita, Gaikwad*1 Dinesh Kawade2 Dhananjay Tidke3 Shubham Khandare4 Sneha Nandeshwar5. "Heterocyclic 1, 3, 4-Oxadiazole Compounds with Diverse Biological Activities - A Comprehensive Review." International Journal of Pharmaceutical Sciences 2, no. 12 (2024): 1324–34. https://doi.org/10.5281/zenodo.14378794.

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1,3,4-oxadiazoles, heterocycles bearing one oxygen and two nitrogen atoms in a five membered ring have their application in the diverse areas of medicine.[1] This interesting group of compounds has diverse biological activities such as antibacterial, antifungal, antiviral, anticonvulsant, anticancer, anti-inflammatory, anti HIV, anti-tubercular  activity etc.[2] Researchers  are interested in developing and studying novel heterocyclic compounds that contain 1,3,4-oxadiazole because of its many significant applications. We have attempted to provide an overview of some of the significa

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24

Tauchman, Jiří, Jakub Trnka, Ivana Císařová, and Petr Štěpnička. "Synthesis, crystal structures and electrochemistry of ferrocenyl-substituted 1,3,4-oxadiazoles." Collection of Czechoslovak Chemical Communications 75, no. 10 (2010): 1023–40. http://dx.doi.org/10.1135/cccc2010064.

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Two ferrocenyl-substituted 1,3,4-oxadiazoles, 2-ferrocenyl-1,3,4-oxadiazole (1) and 2,5-diferrocenyl-1,3,4-oxadiazole (2), have been prepared from the corresponding hydrazides, (ferrocenecarbonyl)hydrazine (3) and 1,2-bis(ferrocenecarbonyl)hydrazine (4), and characterized by conventional spectroscopic methods (IR, NMR, MS) and elemental analyses. The solid-state structures of 1, 2 and 4 have been determined by single-crystal X-ray diffraction analysis. The redox behavior of 1 and 2 was studied by electrochemical methods. Compound 1 underwent a reversible one-electron oxidation attributed to th

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25

Hamciuc, Corneliu, Elena Hamciuc, and Maria Bruma. "Poly(1, 3, 4-Oxadiazole-Amide)s Containing Pendent Phenoxy Groups." High Performance Polymers 8, no. 4 (1996): 507–14. http://dx.doi.org/10.1088/0954-0083/8/4/003.

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A series of new poly(1, 3, 4-oxadiazole-amide)s have been synthesized by solution polycondensation of aromatic diamines containing preformed 1, 3, 4-oxadiazole rings with phenoxyterephthalic diacid chloride or by the reaction of the same diacid chloride with p-aminobenzhydrazide resulting in a polyhydrazide-amide which was cyclodehydrated to the corresponding oxadiazolic structure. The new polymers were soluble or partially soluble in polar amidic solvents, were stable up to 375–400 °C in air and had a glass transition temperature in the range of 225–272 °C.

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26

Godovikova, T. I., S. K. Vorontsova, L. D. Konyushkin, S. I. Firgang, and O. A. Rakitin. "4-Methyl-1,2,5-oxadiazole-3-carbonitrile in the synthesis of 1,2,5-oxadiazolyl-1,2,4-oxadiazoles." Russian Chemical Bulletin 57, no. 11 (2008): 2440–42. http://dx.doi.org/10.1007/s11172-008-0349-4.

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27

Nguyen Tien, Cong, Duc Tran Thi Cam, Ha Bui Manh, and Dat Nguyen Dang. "Synthesis and Antibacterial Activity of Some Derivatives of 2-Methylbenzimidazole Containing 1,3,4-Oxadiazole or 1,2,4-Triazole Heterocycle." Journal of Chemistry 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/1507049.

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5-[(2-Methyl-1H-benzimidazol-1-yl)methyl]-1,3,4-oxadiazole-2-thiol or 5-[(2-methyl-1H-benzimidazol-1-yl)methyl]-4-(4-methylphenyl)-1,2,4-triazol-3-thiol which were prepared starting from 2-methylbenzimidazole in the reaction with appropriateN-aryl-2-chloroacetamides afforded two series ofN-aryl-2-{5-[(2-methyl-1H-benzimidazol-1-yl)methyl]-1,3,4-oxadiazol-2-yl}sulfanylacetamides andN-aryl-2-{5-[(2-methyl-1H-benzimidazol-1-yl)methyl]-4-(4-methylphenyl)-4H-1,2,4-triazol-3-ylthio}acetamides, respectively. The structures of the compounds were elucidated on the basis of IR, MS,1H-NMR, and13C-NMR spe

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Variya, Hiren H., Vikram Panchal, Falguni G. Bhabhor, and G. R. Patel. "Synthesis and Characterization of Biologically Potent Chalcone Bearing 1,3,4-Oxadiazole Linkage." International Letters of Chemistry, Physics and Astronomy 61 (November 2015): 77–83. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.61.77.

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In this article, we have described to design and synthesized a series of substituted chalcone based 1,3,4-oxadiazole derivatives. Titled compounds (E)-S-(-5-phenyl-1,3,4-oxadiazol-2-yl) 2-(4-(3-(5-methyl-3oxo-2(p-tolyl)-2,3-dihydro-1H-pyrazol-4-yl)-3-oxoprop-1-en-1-yl) phenoxy) etanethioate (III1-6) were synthesized using of derivatives of S-(-5-phenyl-1,3,4 oxadiazole-2-yl)2-chloroethaethioate (I1-6) were reacted with (E)-4-(3-(4-hydroxyphenyl) acryloyl)-5-methyl-2(p-tolyl)-1H-pyrazol-3(2H)-one (II) in presence of K2CO3 in DMF as a solvent. The synthesized compounds were evaluated for their a

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Variya, Hiren H., Vikram Panchal, Falguni G. Bhabhor, and G. R. Patel. "Synthesis and Characterization of Biologically Potent Chalcone Bearing 1,3,4-Oxadiazole Linkage." International Letters of Chemistry, Physics and Astronomy 61 (November 3, 2015): 77–83. http://dx.doi.org/10.56431/p-x4q61z.

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In this article, we have described to design and synthesized a series of substituted chalcone based 1,3,4-oxadiazole derivatives. Titled compounds (E)-S-(-5-phenyl-1,3,4-oxadiazol-2-yl) 2-(4-(3-(5-methyl-3oxo-2(p-tolyl)-2,3-dihydro-1H-pyrazol-4-yl)-3-oxoprop-1-en-1-yl) phenoxy) etanethioate (III1-6) were synthesized using of derivatives of S-(-5-phenyl-1,3,4 oxadiazole-2-yl)2-chloroethaethioate (I1-6) were reacted with (E)-4-(3-(4-hydroxyphenyl) acryloyl)-5-methyl-2(p-tolyl)-1H-pyrazol-3(2H)-one (II) in presence of K2CO3 in DMF as a solvent. The synthesized compounds were evaluated for their a

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Pagoria, Philip, Maoxi Zhang, Ana Racoveanu, Alan DeHope, Roman Tsyshevsky, and Maija Kuklja. "3-(4-Amino-1,2,5-oxadiazol-3-yl)-4-(4-nitro-1,2,5-oxadiazol-3-yl)-1,2,5-oxadiazole." Molbank 2014, no. 2 (2014): M824. http://dx.doi.org/10.3390/m824.

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Obruchnikova, Natalia V., and Oleg A. Rakitin. "4-(2,5-Dimethyl-1H-pyrrol-1-yl)-1,2,5-oxadiazol-3-amine." Molbank 2023, no. 3 (2023): M1700. http://dx.doi.org/10.3390/m1700.

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1,2,5-Oxadiazol-3-amines with a heterocyclic substituent in the 4-position are being intensively investigated as compounds with valuable pharmacological activity. In this communication, the reaction of 1,2,5-oxadiazole-3,4-diamine with 2,5-hexanedione was shown to selectively give 4-(2,5-dimethyl-1H-pyrrol-1-yl)-1,2,5-oxadiazol-3-amine as a product of the Paal–Knorr reaction. The structure of the synthesized compound was established by elemental analysis, high-resolution mass spectrometry, 1H and 13C NMR, and IR spectroscopy.

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Kysil, Andrii, Angelina Biitseva, Oleksandra Bugera, Tetyana Yegorova, and Zoia Voitenko. "Synthesis of 2-(1,2,4-oxadiazol-5-yl)-2,3-dihydro-4H-chromen-4-ones." French-Ukrainian Journal of Chemistry 8, no. 2 (2020): 176–82. http://dx.doi.org/10.17721/fujcv8i2p176-182.

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Simple and efficient synthesis of 2-(1,2,4-oxadiazol-5-yl)-2,3-dihydro-4H-chromen-4-ones is elaborated. The method relies on CDI-mediated cyclocondensation of substituted 4-oxochromane-2-carboxylic acids and amidoximes. The protocol allows the preparation of 2-oxadiazolylchromanones decorated with two pharmacophores (2,3-dihydro-4H-chromen-4-one and 1,2,4-oxadiazole) that are in high demand in drug discovery.

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Zhou, Ying, S. Y. Feng, and D. H. Zhang. "A probe molecule based on 1,3,4-oxadiazole was constructed for crystal structure analysis and Sn4+ identification." Журнал структурной химии 65, no. 11 (2024): 135435. http://dx.doi.org/10.26902/jsc_id135435.

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In order to develop the application of 1,3, 4-oxadiazole compounds in the direction of fluorescent probes, this paper modified the probes by introducing 2-(bromomethyl) pyridine on the amino group of 1,3, 4-oxadiazole derivatives, and synthesized HL1(2-(5-(2-aminophenyl)-1,3,4-oxadiazol-2-yl)-N-(pyridin-2-ylmethyl)aniline). Its structure was characterized by NMR, HRMS and single crystal X-ray diffraction. The weak interaction of HL1 was analyzed by using Multiwfn to draw Hirshfeld surface. The HOMO and LUMO orbitals of HL1 were analyzed in B3LYP/ 6-311++ G basis set using DFT theory. HL1 is hi

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Meng, Xingang, Niao Wang, Xiaofang Long, Lingzhu Chen, and Deyu Hu. "Qualitative and Quantitative Analysis of the New Sulfone Bactericide 2-(4-Fluorophenyl)-5-(Methylsulfonyl)-1,3,4-Oxadiazole and Identification of Its Degradation Pathways in Paddy Water." Journal of Chromatographic Science 58, no. 9 (2020): 859–67. http://dx.doi.org/10.1093/chromsci/bmaa055.

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Abstract Rapid and simple methods for the determination of Jiahuangxianjunzuo (JHXJZ) in paddy water, brown rice, soil and rice straw was developed and validated. This method involved the use of ultrahigh-performance liquid chromatography equipped with photodiode array detector. The most important factor was chromatographic conditions, as identified through an orthogonal experimental design. This method showed good recoveries and precisions, thereby indicating its suitability for monitoring of JHXJZ residues in paddy water, brown rice, soil and rice straw. Furthermore, hydrolysis experiment wa

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Das, Rina, and Dinesh Kumar Mehta. "Evaluation and Docking Study of Pyrazine Containing 1, 3, 4-Oxadiazoles Clubbed with Substituted Azetidin-2-one: A New Class of Potential Antimicrobial and Antitubercular." Drug Research 71, no. 01 (2020): 26–35. http://dx.doi.org/10.1055/a-1252-2378.

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Abstract Background Tuberculosis (TB) caused by Mycobacterium tuberculosis is one of the main killers of people all over the world. The major hurdles with existing therapy are the lengthy regimen and appearance of multi drug resistant (MDR) and extensively drug resistant (XDR) strains of M.tuberculosis. Aims The present work was aimed to synthesize and determine antitubercular and antimicrobial potential of some novel 3-chloro-4-aryl-1-[4-(5-pyrazin-2-yl[1,3,4]oxadiazole-2-ylmethoxy)-phenyl]-azetidin-2-one derivatives 7(a-h) from pyrazinoic acid as precursor, which is a well-established antitu

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Mohammad, Badrud Duza, Mirza Shahed Baig, Neeraj Bhandari, et al. "Heterocyclic Compounds as Dipeptidyl Peptidase-IV Inhibitors with Special Emphasis on Oxadiazoles as Potent Anti-Diabetic Agents." Molecules 27, no. 18 (2022): 6001. http://dx.doi.org/10.3390/molecules27186001.

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Dipeptidyl peptidase-IV (DPP-IV) inhibitors, often known as gliptins, have been used to treat type 2 diabetes mellitus (T2DM). They may be combined with other medications as an additional treatment or used alone as a monotherapy. In addition to insulin, sulfonylureas, thiazolidinediones, and metformin, these molecules appear as possible therapeutic options. Oxadiazole rings have been employed in numerous different ways during drug development efforts. It has been shown that including them in the pharmacophore increases the amount of ligand that may be bound. The exceptional hydrogen bond accep

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Stylianakis, Ioannis, Iraklis Litinas, Antonios Kolocouris та Carlos Silva López. "Formation and Intramolecular Capture of α-Imino Gold Carbenoids in the Au(I)-Catalyzed [3 + 2] Reaction of Anthranils, 1,2,4-Oxadiazoles, and 4,5-Dihydro-1,2,4-Oxadiazoles with Ynamides". Catalysts 12, № 8 (2022): 915. http://dx.doi.org/10.3390/catal12080915.

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α-Imino gold carbenoid species have been recognized as key intermediates in a plethora of processes involving gold-activated alkynes. Here, we explored the pathways of the Au(I)-catalyzed [3 + 2] reaction between the mild nucleophiles: anthranil, 1,2,4-oxadiazole, or 4,5-dihydro-1,2,4-oxadiazole, and an ynamide, PhC≡C-N(Ts)Me, proceeding via the formation of the aforementioned α-imino gold carbene intermediate which, after intramolecular capture, regioselectively produces 2-amino-3-phenyl-7-acyl indoles, N-acyl-5-aminoimidazoles, or N-alkyl-4-aminoimidazoles, respectively. In all cases, the re

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Barbuceanu, Stefania-Felicia, Gabriela Laura Almajan, Ioana Saramet, Constantin Draghici, and Cristian Enache. "The Behaviour of Some Acylthiosemicarbazides in the Reaction with a-Halogenated Esters." Revista de Chimie 59, no. 3 (2008): 304–8. http://dx.doi.org/10.37358/rc.08.3.1753.

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New six unexpected 1,3,4-oxadiazoles were obtained starting from acylthiosemicarbazides. N1-[4-(4-X-phenylsulfonyl)benzoyl]-N4-(2/3-methoxyphenyl)-thiosemicarbazides 2,3a-c were treated with ethyl chloro- or bromoacetate in presence of anhydrous sodium acetate in order to obtain new thiazolidin-4-ones compounds. However, formation of desired thiazolidin-4-ones from these acylthiosemicarbazides failed and instead 1,3,4-oxadiazoles were obtained. For confirmation presence of these compounds, 5-[4-(phenylsulfonyl)phenyl]-2-(3-methoxyphenylamino)-1,3,4-oxadiazole 5a was synthetized by cyclodesulfu

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Xiao, Qiaobin, Sergei Vakulenko, Mayland Chang, and Shahriar Mobashery. "Mutations inmmpLand in the Cell Wall Stress Stimulon Contribute to Resistance to Oxadiazole Antibiotics in Methicillin-Resistant Staphylococcus aureus." Antimicrobial Agents and Chemotherapy 58, no. 10 (2014): 5841–47. http://dx.doi.org/10.1128/aac.03501-14.

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ABSTRACTStaphylococcus aureusis a leading cause of hospital- and community-acquired infections, which exhibit broad resistance to various antibiotics. We recently disclosed the discovery of the oxadiazole class of antibiotics, which hasin vitroandin vivoactivities against methicillin-resistantS. aureus(MRSA). We report herein that MmpL, a putative member of the resistance, nodulation, and cell division (RND) family of proteins, contributes to oxadiazole resistance in theS. aureusstrain COL. Through serial passages, we generated twoS. aureusCOL variants that showed diminished susceptibilities t

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Wu, Xiang-Wen, Meng-Meng Xin, Jian-Ping Ma, Zhen-Hua Wu, and Yu-Bin Dong. "The coordination chemistry of two symmetric double-armed oxadiazole-bridged organic ligands with copper salts." Acta Crystallographica Section C Crystal Structure Communications 69, no. 6 (2013): 601–5. http://dx.doi.org/10.1107/s0108270113010913.

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Two new symmetric double-armed oxadiazole-bridged ligands, 4-methyl-{5-[5-methyl-2-(pyridin-3-ylcarbonyloxy)phenyl]-1,3,4-oxadiazol-2-yl}phenyl pyridine-3-carboxylate (L1) and 4-methyl-{5-[5-methyl-2-(pyridin-4-ylcarbonyloxy)phenyl]-1,3,4-oxadiazol-2-yl}phenyl pyridine-4-carboxylate (L2), were prepared by the reaction of 2,5-bis(2-hydroxy-5-methylphenyl)-1,3,4-oxadiazole with nicotinoyl chloride and isonicotinoyl chloride, respectively. LigandL1 can be used as an organic clip to bind CuIIcations and generate a molecular complex, bis(4-methyl-{5-[5-methyl-2-(pyridin-3-ylcarbonyloxy)phenyl]-1,3,

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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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Yadav, Mange, Shrikant Shirude, Devendra Puntambekar, et al. "Studies in 3,4-diaryl-1,2,5-oxadiazoles and their N-oxides: Search for better COX-2 inhibitors." Acta Pharmaceutica 57, no. 1 (2007): 13–30. http://dx.doi.org/10.2478/v10007-007-0002-z.

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Studies in 3,4-diaryl-1,2,5-oxadiazoles and theirN-oxides: Search for better COX-2 inhibitorsA series of 3,4-diaryl-1,2,5-oxadiazoles and 3,4-diaryl-1,2,5-oxadiazoleN-oxides were prepared and evaluated for COX-2 and COX-1 binding affinityin vitroand for anti-inflammatory activity by the rat paw edema method.p-Methoxy (p-OMe) substituted compounds 9, 21, 34, 41, 42 showed COX-2 enzyme inhibition higher than that showed by compounds with other substituents. 3,4-Di(4-methoxyphenyl)-1,2,5-oxadiazoleN-oxide (42) showed COX-2 enzyme inhibition of 54% at 22 μmol L-1and COX-1 enzyme inhibition of 44%

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Maftei, Catalin V., Elena Fodor, Peter G. Jones, et al. "Synthesis and characterization of novel bioactive 1,2,4-oxadiazole natural product analogs bearing the N-phenylmaleimide and N-phenylsuccinimide moieties." Beilstein Journal of Organic Chemistry 9 (October 25, 2013): 2202–15. http://dx.doi.org/10.3762/bjoc.9.259.

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Taking into consideration the biological activity of the only natural products containing a 1,2,4-oxadiazole ring in their structure (quisqualic acid and phidianidines A and B), the natural product analogs 1-(4-(3-tert-butyl-1,2,4-oxadiazol-5-yl)phenyl)pyrrolidine-2,5-dione (4) and 1-(4-(3-tert-butyl-1,2,4-oxadiazol-5-yl)phenyl)-1H-pyrrole-2,5-dione (7) were synthesized starting from 4-(3-tert-butyl-1,2,4-oxadiazol-5-yl)aniline (1) in two steps by isolating the intermediates 4-(4-(3-tert-butyl-1,2,4-oxadiazol-5-yl)phenylamino)-4-oxobutanoic acid (3) and (Z)-4-(4-(3-tert-butyl-1,2,4-oxadiazol-5

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Lakshmi Gopal R, Sreeja S, Rehna Remesh, Sudhi Sundar, Irfana Biju, and Raisy Renjan Johns. "3, 5-disubstituted 1,2,4- oxadiazole: A potent inhibitor of Mycolic acid synthesis." Open Access Research Journal of Science and Technology 9, no. 1 (2023): 037–42. http://dx.doi.org/10.53022/oarjst.2023.9.1.0052.

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Oxadiazoles are 5-membered, unsaturated, unstable, heteroaromatic ring containing two carbon atom, one oxygen atom and two pyridine type nitrogen atom linked in continuity. They fall under non beta lactam class of antibiotics. Oxadiazoles are potent inhibitors of mycolic acid synthesis. Mycolic acids are long fatty acids important for cell wall formation in class of bacterias called Mycolata taxon. The article focuses on various scaffolds of 1, 2, and 4- oxadiazole having inhibitory action on mycolic acid synthesis and can be applied for anti-tuberculosis treatment.

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Yurttaş, Leyla, Betül K. Çavuşoğlu, Gülşen A. Çiftçi, and Halide E. Temel. "Synthesis and Biological Evaluation of New 1,3,4-Oxadiazoles as Potential Anticancer Agents and Enzyme Inhibitors." Anti-Cancer Agents in Medicinal Chemistry 18, no. 6 (2018): 914–21. http://dx.doi.org/10.2174/1871520618666180322123327.

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Background: 1,3,4-Oxadiazoles have been known with a wide variety of pharmacological activities including anticancer activity. Objective: In this study, novel 2,5-disubstituted 1,3,4-oxadiazole derivatives were synthesized and evaluated for determining their anticancer, anticholinesterase and lipoxygenase (LOX) inhibitory activity. Methods: All compounds were tested against C6 rat glioma, A549 human lung carcinoma and NIH/3T3 mouse embryo fibroblast cell lines to define cytotoxic concentrations and apoptosis induction levels which they cause. Results: Many of the compounds exhibited remarkable

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Hkiri, Shaima, Kübra Açıkalın Coşkun, Elvan Üstün та ін. "Silver(I) Complexes Based on Oxadiazole-Functionalized α-Aminophosphonate: Synthesis, Structural Study, and Biological Activities". Molecules 27, № 23 (2022): 8131. http://dx.doi.org/10.3390/molecules27238131.

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Two silver(I) complexes, bis{diethyl[(5-phenyl-1,3,4-oxadiazol-2-yl-κN3:κN4-amino) (4-trifluoromethylphenyl)methyl]phosphonate-(tetrafluoroborato-κF)}-di-silver(I) and tetrakis-{diethyl[(5-phenyl-1,3,4-oxadiazol-2-yl-κN3-amino)(4-trifluoromethylphenyl)methyl]phosphonate} silver(I) tetrafluoroborate, were prepared starting from the diethyl[(5-phenyl-1,3,4-oxadiazol-2-yl-amino)(4-trifluoromethylphenyl)methyl]phosphonate (1) ligand and AgBF4 salt in Ag/ligand ratios of 1/1 and 1/4, respectively. The structure, stoichiometry, and geometry of the silver complexes were fully characterized by element

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47

Kumar, Davinder, Navidha Aggarwal, Virender Kumar, et al. "Synthesis, Anticancer, Antimicrobial and Antioxidant Potential of Novel 4-(Substituted phenyl-1,3,4-oxadiazol/thiadiazol-2-yl)-4-(4-substituted phenyl) Azetidin-2-One Derivatives." Pharmaceuticals 16, no. 4 (2023): 517. http://dx.doi.org/10.3390/ph16040517.

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By exploiting the ample biological potential of 1,3,4-oxadiazole/thiadiazole ring, 4-substitutedphenyl-1,3,4-oxadiazol/Thiadiazol-2-yl)-4-(4-substitutedphenyl) azetidin-2-one derivatives were prepared. Various substituted azetidin-2-one derivatives have been identified as immunostimulating and antimicrobial, as well as their antioxidant activity. 2-amino 1,3,4 oxadiazole/thiadiazole conjugates were synthesized by mixing semi/thio carbazides and sodium acetate with water and stirring well, followed by adding aldehydes in methanol at room temperature. Acetate (glacial) was used as the catalyst t

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S. Ahmed, Wurood, Ammar A. Razzak Mahmood, and Redha I. Al-Bayati. "Synthesis and Evaluation of Antimicrobial Activity of New Imides and Schiff Bases Derived from Ethyl -4-Amino Benzoate." Oriental Journal of Chemistry 34, no. 5 (2018): 2477–86. http://dx.doi.org/10.13005/ojc/340533.

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A series of disubstituted 1,3,4-oxadiazole derivatives, including imides and Schiff bases, was achieved from the starting material, ethyl-4-aminobenzoate, which was converted to the corresponding 4-aminobenzohydrazide (1), by its reaction with hydrazine hydrate in absolute ethanol. Two oxadiazole parent nuclei had been synthesized from (1), the first nucleus 5-(4-aminophenyl)-1,3,4-oxadiazol-2-amine(2), and the second is 5-(4-aminophenyl)-1,3,4-oxadiazole-2-thione (3). Compound (2) Obtained from stirring methanolic solution of (1) with cyanogen bromide (CNBr) and sodium bicarbonate (NaHCO3) at

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Gatphoh, Banylla Felicity Dkhar, Natasha Naval Aggarwal, S. Madan Kumar, M. Vijay Kumar, and B. C. Revanasiddappa. "Synthesis, in silico analysis and antidepressant activity of 1,3,4-oxadiazole derivatives." Bangladesh Journal of Pharmacology 17, no. 1 (2022): 14–21. http://dx.doi.org/10.3329/bjp.v17i1.58728.

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The compounds 1,3,4-oxadiazole derivatives (1-8) were synthesized by the cyclization of 4-hydroxy benzhydrazide (1) with various substituted aroma-tic aldehydes (2) using FeCl3 as catalyst and methanol as a solvent medium. The structures of the newly synthesized compounds were assigned based on FT-IR, 1H-NMR, and mass spectral data. In vivo antidepressant activity was performed by tail suspension test and forced swimming test models. Using the Schrodinger Maestro, the in silico analysis was performed and docked to the glycogen synthase kinase 3β binding site (PDB: 3GB2). Compounds 8 [4,4'-(1,3

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Oulhaj, Oumaima, Lamya Oubenmoussa, Hicham Essassaoui, Mohamed Bouha, and Mohamed Mbarki. "Structural, electronic, and spectroscopic properties of oxadiazole isomers in the light of DFT computational study." Current Chemistry Letters 14, no. 1 (2025): 31–40. http://dx.doi.org/10.5267/j.ccl.2024.10.004.

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Oxadiazoles, a class of nitrogen-containing heterocycles, exhibit diverse applications in pharmaceuticals, industry, and other fields. This study employs Density Functional Theory (DFT) to investigate the structural, electronic, and spectroscopic properties of four oxadiazole isomers. The B3LYP functional and the 6-311G(d,p) basis set were used for calculations. Frontier orbital energies, energy gap, chemical reactivity descriptors, dipole moment, and thermodynamic properties were computed. Additionally, IR and UV spectra were analyzed. The results indicate significant variations in electronic

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