Results 11 to 20 of about 12,849,117 (223)

A Graphene Acid - TiO2 Nanohybrid as Multifunctional Heterogeneous Photocatalyst for the Synthesis of 1,3,4-Oxadiazoles

open access: yes, 2022
The immobilization of TiO2 nanoparticles on graphene acid (GA), a conductive graphene derivative densely functionalized with COOH groups, is presented.
Víctor A. de la Peña O’ Shea (13150095)   +5 more
core   +1 more source

Synthesis and Study of Some 4-Chlorophenoxy Methyl Substituted amido1,3,4-Oxadiazoles, 1,3,4-Thiadiazoles and 1,2,4-Triazoles from 4-Chloro phenoxy acetic acid [PDF]

open access: yesمجلة التربية والعلم, 2013
: In this paper the synthesis of some substituted 1,3,4-oxadiazole, 1,3,4-thiadiazoles and 1,2,4-triazoles is reported. 4-Chlorophenol was treated with chloroacetic acid to give 4-chlorophenoxy acetic acid (C1) which was reacted with thionyl chloride ...
Mudhar A. Othman, Khalid M. Daoud
doaj   +1 more source

Synthesis of Novel 3-Acetyl N-methyl-2- Quinolone Derivatives with Expected Antimicrobial Activity

open access: yesAl-Mustansiriyah Journal of Science, 2018
A series of new 3-Acetyl N-Methyl-2-quinolones oxadiazoles derivatives were synthesized by reaction of 3-acetyl-4-hydroxy-1-methylquinolin-2(1H)-one 3 with ethylbromoacetate to produce compounds 4.
Ghazwan Ali Salman
doaj   +1 more source

Synthesis of Some 1, 3, 4- Oxadizole Derivatives from Naproxen and Acetyl Chloride [PDF]

open access: yesمجلة التربية والعلم, 2013
A seriers of 1, 3, 4-oxadiazol-2-thion were synthesized by the reaction of naproxen (or acetyl) amino acid hydrazides (glycine, valine, leucine, isoleucine and tyrosine) with carbon disulphide in alkaline medium.
Alya A. Dawood
doaj   +1 more source

Biological activity of heterocyclic systems based on functionally substituted 1,3,4-thia(oxa)diazoles (a review)

open access: yesФармацевтичний журнал, 2019
1,3,4-Thiadiazole and oxadiazole hetetocycles are well-known pharmacophore scaffolds, which possess wide possibility for chemical modification and identified diverse pharmacological potential.
M. I. Lelyukh
doaj   +1 more source

Synthesis Of 2-Benzamidomethyl-5-Substituted Amino-1,3,4-Thiadiazoles-2,5-Disubstituted 1,3,4-Oxadiazole and 4,5-Disubstituted 1,2,4-Triazole-3-Thiol [PDF]

open access: yesمجلة التربية والعلم, 2012
In this paper the synthesis of some substituted 1,3,4-oxadiazoles , 1,3,4-thiadiazoles and 1,2,4-triazoles starting from amino acid and benzoyl chloride is reported.
K. M. Daoud, A. N. Ali, A. A. Ahmed
doaj   +1 more source

Design, Synthesis and Anticancer Evaluation of Novel Bis-Thiazol-1,2,4-Triazine Hybrids Contained 1,3,4-Oxadiazoles

open access: yes, 2022
A new library of bis-thiazol-1,2,4-triazinehybrids having 1,3,4-oxadiazoles (10a–j) has been designed and synthesized. They were examined for their preliminary anticancer properties against four selected human cancer cell lines including SiHa (cervix ...
Suresh Bairi (14007462)   +2 more
core   +1 more source

Expeditious synthesis of 1,3,4-oxadiazole derivatives via sydnones [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
The clean cyclization of chalcones (1a–c/2a–c) with hydrazine hydrate under microwave irradiation afforded pyrazolines derivatised with sydnone (3d–i/4d–i), which underwent 1,3-dipolar cyclo-addition with acetic anhydride to form pyrazolines appended ...
D. G. BHADREGOWDA   +2 more
doaj   +3 more sources

Toxicological Evaluation of Anti-Scrapie Trimethoxychalcones and Oxadiazoles

open access: yesAnais da Academia Brasileira de Ciências, 2015
An altered form of the cellular prion protein, the PrPScor PrPRes, is implicated in the occurrence of the still untreatable transmissible spongiform encephalopathies.
CLAUDIA P. FIGUEIREDO   +10 more
doaj   +1 more source

Synthesis, characterization and in vivo antitumor effect of new α,β-unsaturated-2,5-disubstituted-1,3,4-oxadiazoles

open access: yes, 2022
New α,β-unsaturated-2,5-disubstituted-1,3,4-Oxadiazoles (4a–j) and (10a–d) have been prepared in good to excellent yields starting from β-chlorovinyl aldehydes and hydrazide.
M. Fray (12315396)   +8 more
core   +1 more source

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