1065124-08-4Relevant academic research and scientific papers
Novel Conjugated s-Tetrazine Derivatives Bearing a 4H-1,2,4-Triazole Scaffold: Synthesis and Luminescent Properties
?wiatkowski, Marcin,Kudelko, Agnieszka,Maj, Anna
, (2022/01/20)
A series of new symmetrical s-tetrazine derivatives, coupled via a 1,4-phenylene linkage with a 4H-1,2,4-triazole ring, were obtained. The combination of these two rings in an extensively coupled system has significant potential applications, mainly in op
Highly fluorescent 1,2,4,5-tetrazine derivatives containing 1,3,4-oxadiazole ring conjugated via a 1,4-phenylene linker
?wi?tkowski, Marcin,K?dzia, Anna,Kruszyński, Rafa?,Kudelko, Agnieszka
, (2020/08/14)
Symmetrical and unsymmetrical 1,2,4,5-tetrazine derivatives containing 1,3,4-oxadiazole ring were obtained in high yields using commercially-available 4-cyanobenzoic acid, hydrazine hydrate and carboxylic acid chlorides. The few-step transformation involved the Pinner reaction and the subsequent mild oxidation of 1,4-dihydro-1,2,4,5-tetrazines using hydrogen peroxide at room temperature. The obtained compounds exhibited luminescent properties and large quantum yields.
Symmetrical and non-symmetrical 2,5-diaryl-1,3,4-oxadiazoles: Synthesis and photophysical properties
Paraschivescu, Codru?a C.,H?dade, Niculina D.,Coman, Anca G.,Gautier, Arnaud,Cisnetti, Federico,Matache, Mihaela
supporting information, p. 3961 - 3964 (2015/06/08)
We report herein the synthesis of 2,5-diaryl-1,3,4-oxadiazoles containing both electron-donating and withdrawing substituents as well as bis- and tris-2,5-disubstituted-1,3,4-oxadiazoles containing electron-donating substituents. The photophysical properties of the synthesized compounds were studied using UV-Vis and fluorescence spectroscopy. The aryl substitution pattern was found to have a marked impact on both luminescence efficiency and other photophysical properties. An increase in the number of electron-donating groups and/or the number of heterocyclic rings provided a red shift of the emission maxima, as well as an increase of the Stokes shifts. The same effect was observed for mono-1,3,4-oxadiazoles containing push-pull substituents on the aryl rings.
17O NMR studies of substituted 1,3,4-oxadiazoles
Gierczyk, Blazej,Zalas, MacIej,Kazmierczak, Marcin,Grajewski, Jakub,Pankiewicz, Radoslaw,Wyrzykiewicz, Bozena
, p. 648 - 654 (2012/01/06)
Three series of substituted 1,3,4-oxadiazoles were studied by 17O NMR spectroscopy. Chemical shifts values were correlated with empirical Hammett parameters as well as calculated bond lengths and chemical shielding values.
Copper-mediated direct arylation of 1,3,4-oxadiazoles and 1,2,4-triazoles with aryl iodides
Kawano, Tsuyoshi,Yoshizumi, Tomoki,Hirano, Koji,Satoh, Tetsuya,Miura, Masahiro
supporting information; experimental part, p. 3072 - 3075 (2009/12/06)
The copper-mediated direct arylation of 1,3,4-oxadiazoles and 1,2,4-triazoles with aryl iodides proceeds efficiently in the presence of suitable ligands and bases. This method allows the installation of a variety of aryl moieties bearing a functional group such as ketone, ester, or nitrile so as to enable the facile construction of various functionalized oxadiazole and triazole core π systems.
