Results 41 to 50 of about 32,424 (300)

Cu(OH)x-clay catalyst promoted synthesis of 4,5-dihydro-1,2,4-oxadiazole at room temperature

Green Processing and Synthesis, 2018
An easy and efficient scheme is described and designed for the preparation of 4,5-dihydro-1,2,4-oxadiazole using recyclable Cu(OH)x-clay heterogeneous catalyst at room temperature.
Dar Bashir Ahmad, Zaheer Zahed, Fatema Samreen, Farooqui Mazahar   +3 more
doaj   +1 more source

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, Masahiro Ebihara, M. Khawar Rauf, Tashfeen Akhtar   +3 more
doaj   +1 more source

DFT Study of Regio- and Stereoselective 13DC Reaction between Diazopropane and Substituted Chalcone Derivatives: Molecular Docking of Novel Pyrazole Derivatives as Anti-Alzheimer’s Agents

Molecules, 2023
In the present work, a combination of experimental and density functional theory (DFT) investigation of the (3+2) cycloaddition reactions of diazopropane with chalcone derivatives was reported. All calculations were performed using several DFT approaches
Sadeq M. Al-Hazmy, Mohamed Oussama Zouaghi, Nasser Amri, Youssef Arfaoui, Ibrahim A. Alhagri, Naceur Hamdi   +5 more
doaj   +1 more source

Study on the synthesis of novel 5-substituted 2-[2-(pyridyl)ethenyl]-1,3,4-oxadiazoles and their acid–base interactions [PDF]

, 2014
: A series of novel 5-substituted 2-[2-(pyridyl)ethenyl]-1,3,4-oxadiazoles were efficiently synthesized by cyclocondensation of the appropriate 3-(pyridyl)acrylohydrazides with triethyl orthoesters in the presence of glacial acetic acid.
Agnieszka Kudelko, Karolina Jasiak, Krzysztof Ejsmont   +2 more
core   +1 more source

Synthesis of Fluorinated Bent-Core Mesogens (BCMs) Containing the 1,2,4-Oxadiazole Ring [PDF]

, 2015
New fluorinated bent-core mesogens containing the 1,2,4-oxadiazole or 1,2,4-triazole nucleus have been synthesized taking advantage of the ANRORC (Addition of Nucleophile, Ring-Opening, Ring-Closure) reactivity of 5-perfluoroalkyl-1,2,4-oxadiazoles ...
Amaranatha, Buscemi, Buscemi, Buscemi, Buscemi, Buscemi, Fortuna, Francescangeli, Gallardo, Gallardo, Gallardo, Gortz, Hird, Keith, Link, Lo Celso, Mandracchia, Meunier, Pace, Palumbo, Palumbo, Palumbo, Palumbo, Palumbo, Palumbo Piccionello, Parra, Parra, Pelzl, Pelzl, Pibiri, Prasad, Reddy, Ros, Shanker, Shanker, Speetjens, Terenzi, Terenzi, Torgova, Traskovskis, Tschierske, Tschierske, Van der Plas, Zafiropoulos   +43 more
core   +1 more source

Biologically oriented synthesis of medicines (BIODS) based on heterylpoxid 2,5- disubstituted 1,3,4-oxadiazoles (Part 1)

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2020
At the present stage of development of medical chemistry, many basic synthetic approaches to the synthesis of 1,3,4-oxadiazole structures are known, which are focused mainly on the principles of combinatorial chemistry with a wide range of biological ...
Yu. V. Karpenko, O. I. Panasenko, Ye. H. Knysh   +2 more
doaj   +1 more source

Novel 1,3,4-Oxadiazole Induces Anticancer Activity by Targeting NF-κB in Hepatocellular Carcinoma Cells

Frontiers in Oncology, 2018
Aberrant activation of NF-κB is linked with the progression of human malignancies including hepatocellular carcinoma (HCC), and blockade of NF-κB signaling could be a potential target in the treatment of several cancers.
Chakrabhavi Dhananjaya Mohan, Nirvanappa C. Anilkumar, Shobith Rangappa, Muthu K. Shanmugam, Srishti Mishra, Arunachalam Chinnathambi, Sulaiman Ali Alharbi, Atanu Bhattacharjee, Gautam Sethi, Alan Prem Kumar, Alan Prem Kumar, Basappa, Basappa, Kanchugarakoppal S. Rangappa   +13 more
doaj   +1 more source

A survey of liquid crystalline oxadiazoles

, 2008
We propose a survey of those oxadiazole compounds, which are mesogenic. We will see that they can have bend-shaped molecules, a biaxial nematic phase, or other interesting peculiarities in the nematic and smectic phase.
Sparavigna, Amelia
core   +1 more source

Two reaction routes for the preparation of aromatic polyoxadiazoles and polytriazoles: Syntheses and properties [PDF]

, 1994
Two reaction routes for the preparation of aromatic poly-1,3,4-oxadiazoles and poly-1,2,4-triazoles are studied and their influence on the physical properties, i.e., inherent viscosity, glass transition, degradation temperature, and film integrity of the
Boom, J.P., Boom, J.P., Hensema, E.R., Hensema, E.R., Mulder, M.H.V., Smolders, C.A., Smolders, C.A.   +6 more
core   +2 more sources

Poly(1,3,4-oxadiazoles) via aromatic nucleophilic displacement [PDF]

, 1992
Poly(1,3,4-oxadiazoles) (POX) are prepared by the aromatic nucleophilic displacement reaction of di(hydroxyphenyl) 1,3,4-oxadiazole monomers with activated aromatic dihalides or activated aromatic dinitro compounds. The polymerizations are carried out in
Connell, John W., Hergenrother, Paul M., Wolf, Peter   +2 more
core   +1 more source