Results 21 to 30 of about 1,413 (178)
2-(4-Bromophenoxy)propanohydrazide
Acta Crystallographica Section E, 2009 The title compound, C9H11BrN2O2, is an important intermediate for the synthesis of heterocyclic compounds such as azoles, 2,5-disubstituted-1,3,4-oxadiazoles and 5-substituted 2-mercapto-1,3,4-oxadiazoles. The bromophenoxy group subtends a dihedral angle
Shahid Hameed +3 more
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Synthesis a Number of Heterocyclic Compounds and some of chalcones Derived From Levofloxacin
Tikrit Journal of Pure Science, 2023 The hydrazide (1) was used as synthone for the following Compound pyridazine-3,6-dione (2) by reaction of hydrazide (1) with maleic anhydride and Compound phthalazine-1,4-dione (3) by the reaction of hydrazide (1) with phthalic anhydride.
Ekram Abdullah Basheer +2 more
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Zagazig Journal of Pharmaceutical Sciences, 1993 Synthesis of 2- (6-bromo -2- imidazo [4,5-b] pyridinyl) ethyl -5-( substituted) thío 1,3,4 Oxadiazole derivatives is described. The preparation of 1,3,4 - Oxadiazoles was achieved by cyclization of the corresponding acid hydrazide.
Mohamed Ebeid +4 more
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Anti-Cancer Activity of Derivatives of 1,3,4-Oxadiazole [PDF]
Molecules, 2018 Compounds containing 1,3,4-oxadiazole ring in their structure are characterised by multidirectional biological activity. Their anti-proliferative effects associated with various mechanisms, such as inhibition of growth factors, enzymes, kinases and others, deserve attention.
Teresa Glomb +2 more
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Chemical and Pharmaceutical Bulletin, 2013 A new class of mono and bis heterocycles-styrylsulfonylmethyl 1,3,4-oxadiazoles, pyrazolyl/isoxazolyl-1,3,4-oxadiazoles were prepared and studied their antioxidant activity. The compound methyl substituted 2-(p-methylphenylamino-sulfonylmethyl)-5-[Z-(p-methylstyrylsulfonylmethyl)]-1,3,4-oxadiazole displayed slightly higher antioxidant activity than the
Mallikarjuna Reddy, Guda +5 more
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SYNTHESIS OF MONO-SUBSTITUTED AND SIMMETRICALLY 2, 5-DISUBSTITUTED 1, 3, 4-OXADIAZOLES [PDF]
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2012 In recent years 1,3,4-oxadiazoles have received considerable attention due to their wide range of biological activities and practical importance. They form an important class of fi ve-member heterocyclic compounds with a variety of derivatives.
Z. Ribcovskaia, F. Macaev
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Synthesis of 1,3,4-Oxadiazole Derivatives from Ethyl-2-Piperidone-3-Carboxylate [PDF]
مجلة التربية والعلم, 2012 In the present work, some new 1,3,4- Oxadiazole derivatives have been synthesized from Ethyl-2-Piperidone-3-Carboxylate. The reaction of the ethyl ester with hydrazine hydrate afforded the corresponding hydrazide (I).
M. A. Sheat, O. I. Mohammed
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Synthesis, Characterization and Biological Investigation of Some New Hydroxy – 1,3,4 – Oxadiazole Derivatives [PDF]
Kirkuk Journal of Science, 2016 study the solid compounds of hydroxy 1,3,4 – oxadiazoles have been synthesized by reaction of acid hydrazides with CS2 in the presence of KOH.
Afraa S. S, Jawdat H. A
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Synthesis of some substituted 1,3,4-oxadiazoles, 1,3,4-thiadiazoles and 1,2,4-triazoles from 2-(2,3-dimethylphenyl amino) benzoic acid [PDF]
مجلة التربية والعلم, 2009 In this paper the synthesis of some substituted 1,3,4-oxadiazoles, 1,3,4-thiadiazoles and 1,2,4-triazoles was achieved. 2-(2,3-dimethyl phenyl amino) benzoic acid was esterified to its ethyl ester by its reaction with absolute ethanol in presence of ...
Khalid Daoud +2 more
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Arylation Reactions in the Synthesis of Biologically Important 2,5-Diaryl-1,3,4-Oxadiazoles
Applied Sciences, 2022 Apart from carbon atoms, some cyclic molecules contain other elements and play an extraordinary role in human life. Among these systems, 1,3,4-oxadiazole derivatives deserve special attention due to their biological properties such as antibacterial ...
Monika Olesiejuk, Agnieszka Kudelko
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