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Artigos de revistas sobre o tema "3-oxadiazol"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 12 de fevereiro de 2022

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1

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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2

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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3

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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4

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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5

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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6

Jia, Si-Yuan, Bo-Zhou Wang, Xue-Zhong Fan, Ping Li, and Seik Weng Ng. "4-[4-(4-Amino-1,2,5-oxadiazol-3-yl)-1,2,5-oxadiazol-3-yl]-1,2,5-oxadiazol-3-amine." Acta Crystallographica Section E Structure Reports Online 68, no. 5 (2012): o1573. http://dx.doi.org/10.1107/s1600536812017825.

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7

Xiong, Hualin, Hongwei Yang, Caijin Lei, Pengjiu Yang, Wei Hu, and Guangbin Cheng. "Combinations of furoxan and 1,2,4-oxadiazole for the generation of high performance energetic materials." Dalton Transactions 48, no. 39 (2019): 14705–11. http://dx.doi.org/10.1039/c9dt02684c.

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Energetic materials, comprising furoxan and 1,2,4-oxadiazole backbones, were synthesized by nitrating 3,3′-bis(5-amino-1,2,4-oxadiazol-3-yl)-4,4′-azofuroxan, followed by cation metathesis, giving compounds with high density, high detonation performance and acceptable sensitivities.

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8

Tkachuk, V., T. Lyubchuk, T. Tkachuk, and O. Hordiyenko. "A DEVELOPMENT OF AN EFFECTIVE METHOD FOR THE SYNTHESIS OF 2-(5-OXO-4,5-DIHYDRO-1,2,4-OXADIAZOL-3-YL)BENZOIC ACID." Bulletin of Taras Shevchenko National University of Kyiv. Chemistry, no. 1 (57) (2020): 51–54. http://dx.doi.org/10.17721/1728-2209.2020.1(57).13.

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2-(5-Oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)benzoic acid was synthesized using a new effective method – thermal heterocyclization of 3-(hydroxyimino)isoindolin-1-one, which occurs as a result of its interaction with 1,1'-carbonyldiimidazole (CDI) and subsequent base-promoted cycleopening of the obtained intermediate 3H,5H-[1,2,4]oxadiazolo[3,4-a]isoindole-3,5-dione. Direct cyclization of 3-(hydroxyimino)isoindolin-1-one by the reaction with diethyl carbonate in the presence of sodium ethylate in ethanol at room temperature and under heating was unsuccessful. The same result was observed when usi

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9

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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10

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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11

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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12

Kaya, Betül, Weiam Hussin, Leyla Yurttaş, et al. "Design and Synthesis of New 1,3,4-Oxadiazole – Benzothiazole and Hydrazone Derivatives as Promising Chemotherapeutic Agents." Drug Research 67, no. 05 (2017): 275–82. http://dx.doi.org/10.1055/s-0042-119070.

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AbstractLooking for new cytotoxic and antimicrobial agents with improved antitumor activity, a series of hydrazide and oxadiazole derivatives were designed and synthesized using 3-methoxyphenol as starting substance. Novel N’-(arylidene)-2-(3-methoxyphenoxy)acetohydrazide derivatives (4a–f)/1-(4-substitutedphenyl)-2-[(5-[(3-methoxyphenoxy)methyl]-1,3,4-oxadiazol-2-yl)thio]ethan-1-one derivatives (6a–f)/N-(6-substitutedbenzothiazol-2-yl)-2-[(5-[(3-methoxyphenoxy)methyl]-1,3,4-oxadiazol-2-yl)thio]acetamide derivatives (7a–e) were obtained and evaluated for their in vitro antimicrobial activity a

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13

Salahuddin, Avijit Mazumder, and Mohammad Shaharyar. "Synthesis, Characterization, andIn VitroAnticancer Evaluation of Novel 2,5-Disubstituted 1,3,4-Oxadiazole Analogue." BioMed Research International 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/491492.

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In this series, we have synthesised a new 2,5-disubstituted 1,3,4-oxadiazole in search of potential therapeutics for cancer. The anticancer activities were evaluated on a panel of 60 cell lines by the National Cancer Institute according to its own screening protocol. Out of the 24 compounds, 11 were selected and evaluated via single high dose (10−5 M). In the next phase, two compounds have been selected for five-dose assay. The compounds 3-(5-benzyl-1,3,4-oxadiazol-2-yl)quinolin-2(1H)-one18(NSC-776965) and 3-[5-(2-phenoxymethyl-benzoimidazol-1-ylmethyl)-[1,3,4]oxadiazol-2-yl]-2-p-tolyloxy-quin

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14

Ribkovskaia, Zinaida, Serghei Pogrebnoi, Alic Barba, and Fliur Macaev. "Synthesis and Characterization of [(5-Mercapto-1,3,4-Oxadiazol-2-YL)Aryl]-3,5-Diaryl-4,5-Dihydro-1H-Pyrazole-1-Carbothioamides." Chemistry Journal of Moldova 6, no. 1 (2011): 90–100. http://dx.doi.org/10.19261/cjm.2011.06(1).04.

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The synthesis and characterization of [(5-mercapto-1,3,4-oxadiazol-2-yl)aryl]-3,5-diaryl-4,5-dihydro-1Hpyrazole-1-carbothioamides - derivatives of pyrazolines and 5-[4(3)-isothiocyanatophenyl]-2-thio-1,3,4-oxadiazoles were realized. The synthesized compounds, are crystalline substances, stable in storage and when exposed to air and light.

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15

Sattar, Almas, Aziz-ur-Rehman, Muhammad Athar Abbasi, Sabahat Zahra Siddiqui, Shahid Rasool, and Irshad Ahmad. "Synthesis of some novel enzyme inhibitors and antibacterial agents derived from 5-(1-(4-tosyl)piperidin-4-yl)-1,3,4-oxadiazol-2-thiol." Brazilian Journal of Pharmaceutical Sciences 52, no. 1 (2016): 77–85. http://dx.doi.org/10.1590/s1984-82502016000100009.

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ABSTRACT Keeping in mind the pharmacological importance of the 1,3,4-oxadiazole moiety, a series of new S-substituted derivatives, 5a-h, of 5-(1-(4-tosyl)piperidin-4-yl)-1,3,4-oxadiazol-2-thiol (3) were synthesized. The reaction of p-toluenesulfonyl chloride (a) and ethyl isonipecotate (b) produced ethyl 1-(4-tosyl)piperidin-4-carboxylate (1) which was further transformed into 1-(4-tosyl)piperidin-4-carbohydrazide (2) by hydrazine hydrate in methanol. Compound 2 was refluxed with CS2 in the presence of KOH to synthesize 5-(1-(4-tosyl)piperidin-4-yl)-1,3,4-oxadiazol-2-thiol (3). The desired com

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16

Sağırlı, Akın, and Yaşar Dürüst. "Reactions of 3-(p-substituted-phenyl)-5-chloromethyl-1,2,4-oxadiazoles with KCN leading to acetonitriles and alkanes via a non-reductive decyanation pathway." Beilstein Journal of Organic Chemistry 14 (December 10, 2018): 3011–17. http://dx.doi.org/10.3762/bjoc.14.280.

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The present work describes an unfamiliar reaction of 5-(chloromethyl)-3-substituted-phenyl-1,2,4-oxadiazoles with KCN affording trisubstituted 1,2,4-oxadiazol-5-ylacetonitriles and their parent alkanes, namely, 1,2,3-trisubstituted-1,2,4-oxadiazol-5-ylpropanes. To the best of our knowledge, the current synthetic route leading to decyanated products will be the first in terms of a decyanation process which allows the transformation of trisubstituted acetonitriles into alkanes by the incorporation of KCN with the association of in situ-formed HCN and most likely through the extrusion of cyanogen

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17

Godovikova, T. I., S. K. Vorontsova, L. D. Konyushkin, S. I. Firgang, and O. A. Rakitin. "Synthesis of 5-(1,2,5-oxadiazol-3-yl)-1H-etrazoles from 3-cyano-1,2,5-oxadiazoles." Russian Chemical Bulletin 58, no. 2 (2009): 406–9. http://dx.doi.org/10.1007/s11172-010-0023-5.

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18

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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19

Hatterman, Harlene M., Patrick J. Shea, and Ellen T. Paparozzi. "Weed Control in Annual Statice." Weed Science 35, no. 3 (1987): 373–76. http://dx.doi.org/10.1017/s0043174500053844.

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Experiments were conducted in 1982, 1983, and 1984 to determine whether herbicides can effectively control weeds in annual statice (Limonium sinuatum Mill.) without reducing the marketability of the crop. A greenhouse evaluation of chlorpropham (1-methylethyl 3-chlorophenylcarbamate), napropamide [N,N-diethyl-2-(1-naphthalenyloxy)propanamide], EPTC (S-ethyl dipropyl carbamothioate), oxadiazon {3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyi)-1,3,4-oxadiazol-2-(3H)-one}, and trifluralin [2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenamine] indicated that preemergence applicat

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20

Panchal, Ishan I., Roshani Rajput, and Ashish D. Patel. "Design, Synthesis and Pharmacological Evalution of 1,3,4-Oxadiazole Derivatives as Collapsin Response Mediator Protein 1 (CRMP 1) Inhibitors." Current Drug Discovery Technologies 17, no. 1 (2020): 57–67. http://dx.doi.org/10.2174/1570163815666181106090708.

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Objective: The series of 2-(4-Phenylamino)-N-(5-((4-nitrophenoxy)methyl) -1,3,4-oxadiazol- 2-yl)aceta-mide (5a-5e) and substituted N-(5-(Phenoxymethyl)-1,3,4-oxadiazol-2-yl)-2- (phenylamino)acetamide (5f-5i) was designed, synthesized and investigated for Collapsin Response Mediator Protein 1 (CRMP 1) inhibitors as small lung cancer. Design: Design of compounds was determined by literature review and molecular docking studies in iGEMDOCK 2.0. Materials and Methods: Novel 1, 3, 4 Oxadiazole derivatives were synthesized and characterized by melting point, TLC, IR Spectroscopy, Mass spectroscopy a

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21

J Khairnar, Bhikan, Rahul S. Salunke, Premchand B. Patil, et al. "Synthesis and Antimicrobial Activity of Some New 1, 4-Benzothiazine Containing Thiosemicarbazides and 1, 3, 4-Oxadiazole Derivatives." E-Journal of Chemistry 9, no. 1 (2012): 318–22. http://dx.doi.org/10.1155/2012/902784.

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A series of novel 3- methyl-7-substituted-4H,4-benzothiazine-2-carbohydrazide (3a-e) and corresponding thiosemicarbazides (4-a-q); 2-[3-methyl-7-substituted- 4H-1, 4-benzothiazine-2-yl]-N-(aryl) hydrazine carbothiamide have been synthesized. The thiosemicarbazide when cyclized with iodine via intramolecular cyclisation gave benzothiazonyl oxadiazoles (5-a-q); 5-(3-methyl -7-substitued-4H- 1,4-benzothiazin-2-yl)-N—aryl- 1,3,4- oxadiazol -2-amine and the compounds were tested for antibacterial and antifungal activities against different microorganisms.

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22

Ding, Bin, Jie Wu, Xiang Xia Wu, et al. "Syntheses, structural diversities and characterization of a series of coordination polymers with two isomeric oxadiazol-pyridine ligands." RSC Advances 7, no. 16 (2017): 9704–18. http://dx.doi.org/10.1039/c6ra28153b.

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In this work two positional-isomeric oxadiazol-pyridine ligands 3-(5-methyl-1,3,4-oxadiazol-2-yl)pyridine (L<sub>1</sub>) and 4-(5-methyl-1,3,4-oxadiazol-2-yl)pyridine (L<sub>2</sub>) have been designed and synthesized.

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23

Wehtje, Glenn R., Charles H. Gilliam, and Ben F. Hajek. "Adsorption, Desorption, and Leaching of Oxadiazon in Container Media and Soil." HortScience 28, no. 2 (1993): 126–28. http://dx.doi.org/10.21273/hortsci.28.2.126.

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Adsorption of 14C-labeled oxadiazon was evaluated in three soilless media and a mineral soil at concentrations between 0.1 and 100 mg·kg-1. Adsorption, which was at least 96%, was not influenced by absorbent type (medium vs. soil) or by oxadiazon concentration. However, desorption was greater in the media than in the soil. After five water extractions, 5.4% of the applied oxadiazon was recovered from media, but only 0.4% was recovered from the soil. In the soil and in two of the media, leaching with water failed to displace oxadiazon 2 cm below the surface to which it had been applied. No oxad

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24

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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25

Ahsan, Mohamed Jawed, Lakshya Bhandari, Shally Makkar, et al. "Synthesis, Antiproliferative, and Antioxidant Activities of Substituted N-[(1,3,4-Oxadiazol-2-yl) Methyl] Benzamines." Letters in Drug Design & Discovery 17, no. 2 (2020): 145–54. http://dx.doi.org/10.2174/1570180816666181113110033.

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Background: Oxadiazole emerged as an important class of heterocyclic compound with diverse biological activities like anticancer, antitubercular, anticonvulsant, anti-tubulin, antimicrobial, anti-inflammatory, antioxidant etc. Objective: The objective of this study is to synthesis series of twelve substituted N-[(1,3,4-oxadiazol-2- yl)methyl]benzamines (6a-l) and their evaluation as antiproliferative and antioxidant agents. Methods: The substituted N-[(1,3,4-oxadiazol-2-yl)methyl]benzamines (6a-l) analogues were synthesized as per the reported procedure. The antiproliferative activity was test

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Hoque, M. E., R. M. Wilkins, A. Kennedy, and J. A. Garratt. "Sorption behaviour of oxadiazon in tropical rice soils." Water Science and Technology 56, no. 1 (2007): 115–21. http://dx.doi.org/10.2166/wst.2007.442.

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The soprtion behaviour of a pre-emergent herbicide, oxadiazon (5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2 (3H)-one) was investigated in tropical rice soils using a batch equilibrium method. There is no information available on the fate of oxadiazon in Bangladeshi soils; Bangladesh rice soil is a unique environment. The experiment was performed using radiolabelled (14C) oxadiazon. The sorption and desorption isotherm of oxadiazon was described using the Freundlich equation. L-type sorption isotherms were observed. The correlation coefficient (r2) was 0.995 to 0.997 and t

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Santos, Suseanne K. M., Ricardo A. W. Neves Filho, Adailton J. Bortoluzzi, and Rajendra M. Srivastava. "3-[3-(3-Fluorophenyl)-1,2,4-oxadiazol-5-yl]propionic acid." Acta Crystallographica Section E Structure Reports Online 65, no. 1 (2008): o146. http://dx.doi.org/10.1107/s1600536808042001.

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Srivastava, Rejendra M., Marilu L. de Oliveira, and Julianna F. C. de Alburquerque. "Methyl 3-[3-(Aryl)-1,2,4-Oxadiazol-5-Yl]Propionates." Journal Of The Brazilian Chemical Society 3, no. 3 (1992): 117–19. http://dx.doi.org/10.5935/0103-5053.19920025.

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Szafrański, Krzysztof, Jarosław Sławiński, Łukasz Tomorowicz, and Anna Kawiak. "Synthesis, Anticancer Evaluation and Structure-Activity Analysis of Novel (E)- 5-(2-Arylvinyl)-1,3,4-oxadiazol-2-yl)benzenesulfonamides." International Journal of Molecular Sciences 21, no. 6 (2020): 2235. http://dx.doi.org/10.3390/ijms21062235.

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To learn more about the structure–activity relationships of (E)-3-(5-styryl-1,3,4-oxadiazol-2-yl)benzenesulfonamide derivatives, which in our previous research displayed promising in vitro anticancer activity, we have synthesized a group of novel (E)-5-[(5-(2-arylvinyl)-1,3,4-oxadiazol-2-yl)]-4-chloro-2-R1-benzenesulfonamides 7–36 as well as (E)-4-[5-styryl1,3,4-oxadiazol-2-yl]benzenesulfonamides 47–50 and (E)-2-(2,4-dichlorophenyl)-5-(2-arylvinyl)-1,3,4-oxadiazols 51–55. All target derivatives were evaluated for their anticancer activity on HeLa, HCT-116, and MCF-7 human tumor cell lines. The

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30

Godovikova, T. I., S. K. Vorontsova, L. D. Konyushkin, S. I. Firgang, and O. A. Rakitin. "ChemInform Abstract: Synthesis of 5-(1,2,5-Oxadiazol-3-yl)-1H-tetrazoles from 3-Cyano-1,2,5-oxadiazoles." ChemInform 41, no. 34 (2010): no. http://dx.doi.org/10.1002/chin.201034148.

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Johnson, B. J. "Differential Large Crabgrass Control with Herbicides in Tall Fescue and Common Bermudagrass." HortScience 28, no. 10 (1993): 1015–16. http://dx.doi.org/10.21273/hortsci.28.10.1015.

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Pendimethalin and oxadiazon are used commonly to control crabgrasses (Digitaria spp.) in tall fescue (Festuca arundinacea Schreb.) and common bermudagrass [Cynodon dactylon (L.) Pers.]. A field experiment was conducted for 2 years to determine if reduced pendimethalin and oxadiazon application rates would control large crabgrass [D. sanguinalis (L.) Sco.] effectively in tall fescue and common bermudagrass. Oxadiazon applied at 1.1 kg a.i./ha in each of two applications at a 60-day interval (less than recommended rate) effectively controlled large crabgrass (≥93%), regardless of turfgrass speci

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32

Sravya, Gundala, Ummadi Nagarjuna, Venkatapuram Padmavathi, Galla Rajitha, Sakuri Chandi priya, and Adivireddy Padmaja. "Synthesis, Antioxidant and Anti-inflammatory Activities of 5-((styrylsulfonyl) methyl)-1,3,4-Oxadiazol / Thiadiazol-2-amine Derivatives." Letters in Drug Design & Discovery 16, no. 11 (2019): 1233–47. http://dx.doi.org/10.2174/1570180816666181102114529.

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Background: A new class of 5-(styrylsulfonylmethyl)-1,3,4-oxadiazol-2-amine and 5- (styrylsulfonylmethyl)-1,3,4-thiadiazol-2-amine derivatives were prepared by derivatization of amino function. Methods: All the synthesized compounds were tested for antioxidant and anti-inflammatory activities. Results: The 2-amino-3-chloro-N-(5-(4-methylstyrylsulfonylmethyl)-1,3,4-oxadiazol-2-yl)-propanamide (12b) and 3-chloro-N-(5-(4-methylstyrylsulfonylmethyl)-1,3,4-oxadiazol-2-yl)-butanamide (14b) displayed significant antioxidant activity, greater than the standard Ascorbic acid. Conclusion: Moreover, 12b

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Anokhina, P. V., T. V. Romanova, S. F. Mel’nikova, and I. V. Tselinskii. "Reduction of 3,4-bis(4-amino-1,2,5-oxadiazol-3-yl)-1,2,5-oxadiazole 2-oxide." Russian Journal of Organic Chemistry 47, no. 10 (2011): 1606–7. http://dx.doi.org/10.1134/s1070428011100319.

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Nguyen Tien, Cong, Thin Nguyen Van, Giang Le Duc, et al. "Synthesis, structure and in vitro cytotoxicity testing of some 1,3,4-oxadiazoline derivatives from 2-hydroxy-5-iodobenzoic acid." Acta Crystallographica Section C Structural Chemistry 74, no. 7 (2018): 839–46. http://dx.doi.org/10.1107/s2053229618008719.

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The syntheses of nine new 5-iodosalicylic acid-based 1,3,4-oxadiazoline derivatives starting from methyl salicylate are described. These compounds are 2-[4-acetyl-5-methyl-5-(3-nitrophenyl)-4,5-dihydro-1,3,4-oxadiazol-2-yl]-4-iodophenyl acetate (6a), 2-[4-acetyl-5-methyl-5-(4-nitrophenyl)-4,5-dihydro-1,3,4-oxadiazol-2-yl]-4-iodophenyl acetate (6b), 2-(4-acetyl-5-methyl-5-phenyl-4,5-dihydro-1,3,4-oxadiazol-2-yl)-4-iodophenyl acetate, C19H17IN2O4 (6c), 2-[4-acetyl-5-(4-fluorophenyl)-5-methyl-4,5-dihydro-1,3,4-oxadiazol-2-yl]-4-iodophenyl acetate, C19H16FIN2O4 (6d), 2-[4-acetyl-5-(4-chlorophenyl)

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35

Zelenin, Alexander K., Edwin D. Stevens, and Mark L. Trudell. "Synthesis and structure of 4-[(4-Nitro-1,2,5-oxadiazol-3-yl)-NNO-azoxyl]-1, 2,5-oxadiazol-3-amine." Structural Chemistry 8, no. 5 (1997): 373–77. http://dx.doi.org/10.1007/bf02281251.

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Zhang, Fang, Fei Liu, Qifan Chen, and Mingdong Dong. "3-[3-(Pyridin-3-yl)-1,2,4-oxadiazol-5-yl]propanoic acid." Acta Crystallographica Section E Structure Reports Online 67, no. 1 (2010): o193. http://dx.doi.org/10.1107/s1600536810051639.

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Wang, Bohan, Hualin Xiong, Guangbin Cheng, Zaichao Zhang, and Hongwei Yang. "An unexpected method to synthesise 1,2,4-oxadiazolone derivatives: a class of insensitive energetic materials." New Journal of Chemistry 42, no. 24 (2018): 19671–77. http://dx.doi.org/10.1039/c8nj04428g.

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A new and effective method for the preparation of 3-(4-amino-1,2,5-oxadiazol-3-yl)-1,2,4-oxadiazol-5(4H)-one is presented. Explosophore groups such as NO<sub>2</sub>NH–, NO<sub>2</sub>–, C(NO<sub>2</sub>)<sub>3</sub>CH<sub>2</sub>NH– and –NN– were incorporated by a variety of functionalization strategies.

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38

Zhang, Ming-Zhi, Nick Mulholland, David Beattie, et al. "Synthesis and antifungal activity of 3-(1,3,4-oxadiazol-5-yl)-indoles and 3-(1,3,4-oxadiazol-5-yl)methyl-indoles." European Journal of Medicinal Chemistry 63 (May 2013): 22–32. http://dx.doi.org/10.1016/j.ejmech.2013.01.038.

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Yang, Rui, Yifei Liu, Zhen Dong, Haiyan Li, and Zhiwen Ye. "3-R-4-(5-Methyleneazide-1,2,4-oxadiazol-3-yl)furazan and its ionic salts as low-sensitivity and high-detonation energetic materials." New Journal of Chemistry 45, no. 25 (2021): 11380–89. http://dx.doi.org/10.1039/d1nj01099a.

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Wang, Hai-Bo, Zhi-Qian Liu, and Xiao-Chen Yan. "Methyl 2-{[3-(3-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methoxy}phenylacetate." Acta Crystallographica Section E Structure Reports Online 62, no. 5 (2006): o1839—o1840. http://dx.doi.org/10.1107/s1600536806010014.

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The title compound, C19H18N2O5, was synthesized by the reaction of methyl (2-hydroxyphenyl)acetate and 5-chloromethyl-3-(3-methoxyphenyl)-1,2,4-oxadiazole. The plane of the oxadiazole ring forms a small dihedral angle of 15.2 (2)° with the plane of the benzene ring directly bonded to it, whereas the second benzene ring is approximately orthogonal to the oxadiazole plane, the dihedral angle being 79.1 (2)°.

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41

Glidewell, Christopher, John N. Low, Janet M. S. Skakle, and James L. Wardell. "3-Phenyl-4H,6H-1,2,4-oxadiazol-5-one." Acta Crystallographica Section C Crystal Structure Communications 60, no. 11 (2004): o818—o820. http://dx.doi.org/10.1107/s0108270104023406.

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Kang, Si-shun, Hai-Lin Li, Hai-su Zeng, Hai-bo Wang, and Pin-liang Wang. "4-[3-(Chloromethyl)-1,2,4-oxadiazol-5-yl]pyridine." Acta Crystallographica Section E Structure Reports Online 63, no. 12 (2007): o4654. http://dx.doi.org/10.1107/s1600536807055559.

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Yan, Xiao-Chen, Hai-Bo Wang, and Zhi-Qian Liu. "[3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl]methanol." Acta Crystallographica Section E Structure Reports Online 62, no. 10 (2006): o4226—o4227. http://dx.doi.org/10.1107/s1600536806024433.

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44

Yan, Xiao-Chen, Hai-Bo Wang, and Zhi-Qian Liu. "[3-(2-Methylphenyl)-1,2,4-oxadiazol-5-yl]methanol." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (2006): o1302—o1303. http://dx.doi.org/10.1107/s1600536806008142.

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Yan, Xiao-Chen, Hai-Bo Wang, and Zhi-Qian Liu. "[3-(2-Chlorophenyl)-1,2,4-oxadiazol-5-yl]methanol." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): o3007—o3008. http://dx.doi.org/10.1107/s1600536806018952.

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Yamuna, Thammarse S., Jerry P. Jasinski, Brian J. Anderson, H. S. Yathirajan, and Manpreet Kaur. "Raltegravir monohydrate." Acta Crystallographica Section E Structure Reports Online 69, no. 12 (2013): o1743—o1744. http://dx.doi.org/10.1107/s1600536813029747.

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The hydrated title compound [systematic name:N-(4-fluorobenzyl)-5-hydroxy-1-methyl-2-{1-methyl-1-[(5-methyl-1,3,4-oxadiazol-2-ylcarbonyl)amino]ethyl}-6-oxo-1,6-dihydropyrimidine-4-carboxamide monohydrate], C20H21FN6O5·H2O, is recognised as the first HIV integrase inhibitor. In the molecule, the dihedral angles between the mean planes of the pyrimidine ring and the phenyl and oxadiazole rings are 72.0 (1) and 61.8 (3)°, respectively. The mean plane of the oxadiazole ring is twisted by 15.6 (3)° from that of the benzene ring, while the mean plane of amide group bound to the oxadiaole ring is twi

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47

Srivastava, Rajendra M., Aníbal J. C. N. da Silva, and Marilu L. de Oliveira. "Synthesis of 5,5'-(1,2-Ethanediyl)-bis[3-(Aryl)-1,2,4-Oxadiazoles] and 3-[3-(Aryl)-1,2,4-Oxadiazol-5-yl] Propionic Acids." Journal Of The Brazilian Chemical Society 4, no. 2 (1993): 84–87. http://dx.doi.org/10.5935/0103-5053.19930019.

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Han, Lu-Na, Ran-Zhe Lu, Min Zhang, and Hai-bo Wang. "2-{3,4-Dibutoxy-5-[5-(3-methylphenyl)-1,3,4-oxadiazol-2-yl]thiophen-2-yl}-5-(3-methylphenyl)-1,3,4-oxadiazole." Acta Crystallographica Section E Structure Reports Online 65, no. 3 (2009): o622. http://dx.doi.org/10.1107/s1600536809006539.

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Shen, Hong, Shu-Yuan Bai, Xin-Yi Han, Xiang-Zhi Li, and Hai-Bo Wang. "8-{[3-(3-Methoxyphenyl)-1,2,4-oxadiazol-5-yl]methoxy}quinoline monohydrate." Acta Crystallographica Section E Structure Reports Online 69, no. 5 (2013): o760. http://dx.doi.org/10.1107/s1600536813010271.

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Maddi, N. V. D. Harikiran, Srinivas Garaga, Ambati V. Raghava Reddy, Paul Douglas Sanasi, and Raghubabu Korupolu. "Synthesis and characterization of related substances of Azilsartan Kamedoxomil." Current Issues in Pharmacy and Medical Sciences 30, no. 1 (2017): 31–35. http://dx.doi.org/10.1515/cipms-2017-0007.

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Abstract Azilsartan Kamedoxomil is an AT1-subtype angiotensin II receptor blocker (ARB). During the laboratory synthesis of Azilsartan Kamedoxomil, four related substances of Azilsartan Kamedoxomil were observed and identified. These were 2-Ethoxy-3-[[4-[2- [4-[(5-methyl-2-oxo-1,3-dioxol-4-yl)methyl]-5-oxo-1,2,4-oxadiazol-3-yl]phenyl]phenyl] methyl] benzimidazole-4-carboxylic acid (azilsartan N-medoxomil, 9), (5-methyl-2-oxo- 1,3-dioxol-4-yl)methyl 2-ethoxy-3-[[4-[2-[4-[(5-methyl-2-oxo-1,3-dioxol-4-yl)methyl]-5- oxo-1,2,4-oxadiazol-3-yl]phenyl]phenyl] methyl] benzimidazole-4-carboxylate (azils

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