Results 41 to 50 of about 19,712 (214)

1,2,3-Triazoles

, 2008
Rapid progress in the synthetic application of benzotriazole derivatives in the last 20 years has resulted in over 1000 scientific papers on the subject. This fact is reflected in Section 5.01.7, which involves almost a half of the volume of this chapter. The section is arranged according to hybridization of the C-α atom and atomic numbers of the atoms
Rachwal, S., Katritzky, A.R.
openaire   +1 more source

Density Function Theory Study on the Energy and Circular Dichroism Spectrum for Methylene-Linked Triazole Diads Depending on the Substitution Position and Conformation

Molecules
Since the discovery of metal-catalyzed azide–alkyne cycloadditions, 1,2,3-triazoles have been widely used as linkers for various residues. 1,2,3-Triazole is an aromatic five-membered cyclic compound consisting of three nitrogen and two carbon atoms with ...
Masaki Nakahata, Akihito Hashidzume
doaj   +1 more source

Design, Synthesis and Anticancer Screening of Novel Benzothiazole-Piperazine-1,2,3-Triazole Hybrids

Molecules, 2018
A library of novel regioselective 1,4-di and 1,4,5-trisubstituted-1,2,3-triazole based benzothiazole-piperazine conjugates were designed and synthesized using the click synthesis approach in the presence and absence of the Cu(I) catalyst. Some of these 1,
Mohamed R. Aouad, Moataz A. Soliman, Muath O. Alharbi, Sanaa K. Bardaweel, Pramod K. Sahu, Adeeb A. Ali, Mouslim Messali, Nadjet Rezki, Yaseen A. Al-Soud   +8 more
doaj   +1 more source

4,5-Dicyano-1,2,3-Triazole—A Promising Precursor for a New Family of Energetic Compounds and Its Nitrogen-Rich Derivatives: Synthesis and Crystal Structures

Molecules, 2021
The nitrogen-rich compounds and intermediates with structure of monocyclic, bicyclic, and fused rings based on 1,2,3-triazole were synthesized and prepared by using a promising precursor named 4,5-dicyano-1,2,3-triazole, which was obtained by the ...
Wenli Cao, Jian Qin, Jianguo Zhang, Valery P. Sinditskii   +3 more
doaj   +1 more source

Selective C(sp2)−H Halogenation of "click" 4-Aryl-1,2,3-triazoles [PDF]

, 2017
Selective bromination reactions of “click compounds” are described. Electron-neutral and electron-deficient arenes selectively undergo unprecedented Pd-catalyzed C–H ortho-halogenations assisted by simple triazoles as modular directing groups, whereas ...
Correa Navarro, Arkaitz, Goitia, Asier, Gómez Bengoa, Enrique   +2 more
core   +2 more sources

Synthesis and Structure Determination of 1-(4-Methoxyphenyl)-5-methyl-N’-(2-oxoindolin-3-ylidene)-1H-1,2,3-triazole-4-carbohydrazide

Molbank, 2022
A reaction of equimolar equivalents of 1-(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carbohydrazide (1) and indoline-2,3-dione (2) in boiling ethanol for 4 h under acidic conditions gave 1-(4-methoxyphenyl)-5-methyl-N’-(2-oxoindolin-3-ylidene)-1H-1,2 ...
Benson M. Kariuki, Bakr F. Abdel-Wahab, Abdelbasset A. Farahat, Gamal A. El-Hiti   +3 more
doaj   +1 more source

Multicomponent Azide-Alkyne Cycloaddition Catalyzed by Impregnated Bimetallic Nickel and Copper on Magnetite [PDF]

, 2014
A new bimetallic catalyst derived from nickel and copper has been used successfully for the first time in the multicomponent reaction of terminal alkynes, sodium azide, and benzyl bromide derivatives.
Cano Monserrat, Rafael, Pérez Galera, Juana María, Ramón, Diego J.   +2 more
core   +2 more sources

Synthesis, Spectroscopic Analysis, and In Vitro Anticancer Evaluation of 2-(Phenylsulfonyl)-2H-1,2,3-triazole

Molbank, 2022
The 1,2,3-Triazole derivatives containing the sulfonyl group have proved their biological importance in medicinal chemistry and drug design. In this sense, we describe the regioselective synthesis of 2-(phenylsulfonyl)-2H-1,2,3-triazole 3 in good yield ...
Angélica Salinas-Torres, Jaime Portilla, Hugo Rojas, Diana Becerra, Juan-Carlos Castillo   +4 more
doaj   +1 more source

Deprotometalation-iodolysis and computed CH acidity of 1,2,3- and 1,2,4-triazoles. Application to the synthesis of resveratrol analogues

, 2015
International audience1-Aryl- and 2-aryl-1,2,3-triazoles were synthesized by N-arylation of the corresponding azoles using aryl iodides. The deprotometalations of 1-phenyl-1,2,3-triazole and -1,2,4-triazole were performed using a 2,2,6,6 ...
Bentabed-Ababsa, Ghenia, Chevallier, Floris, Duval, Raphaël E., Fontanay, Stéphane, Halauko, Yury S., Ivashkevich, Oleg A., Matulis, Vadim E., Mongin, Florence, Nagaradja, Elisabeth, Phillipot, Stéphanie, Roisnel, Thierry, Scalabrini, Mathieu   +11 more
core   +3 more sources

Isolation of bis(copper) key intermediates in Cu-catalyzed azide-alkyne "click reaction". [PDF]

, 2015
The copper-catalyzed 1,3-dipolar cycloaddition of an azide to a terminal alkyne (CuAAC) is one of the most popular chemical transformations, with applications ranging from material to life sciences.
Bertrand, Guy, Jin, Liqun, Melaimi, Mohand, Tolentino, Daniel R   +3 more
core   +2 more sources