Results 51 to 60 of about 11,424 (143)

Regioselective Formation of 2,5-Disubstituted Oxazoles Via Copper(I)-Catalyzed Cycloaddition of Acyl Azides and 1-Alkynes [PDF]

, 2011
The reaction of 1-alkynes with acylazides in the presence of [Tpm*,BrCu(NCMe)]BF4 (Tpm*,Br = tris(3,5-dimethyl-4-bromopyrazolyl)methane) as the catalyst provides 2,5-oxazoles in moderate to high yields.
Cano Rico, Israel, Nicasio Jaramillo, María Carmen, Pérez Romero, Pedro José, Álvarez, Eleuterio   +3 more
core   +1 more source

Strategies Towards the Synthesis of N2-Substituted 1,2,3-Triazoles

Anais da Academia Brasileira de Ciências, 2019
The chemistry of 1,2,3-triazoles gained much attention since the discovery of the copper catalyzed Alkyne-azide cycloaddition (CuAAC) reaction which delivers exclusively the 1,4-regioisomer in high yields.
RODRIGO OCTÁVIO M.A. DE SOUZA, LEANDRO S. DE MARIZ E MIRANDA   +1 more
doaj   +1 more source

Copper-doped functionalized β-cyclodextrin as an efficient green nanocatalyst for synthesis of 1,2,3-triazoles in water

Scientific Reports, 2022
The synthesis of 1,2,3-triazoles with immobilized Cu(I) in thiosemicarbazide-functionalized β-cyclodextrin (Cu@TSC-β‐CD) as a supramolecular catalyst was discussed.
Mahdieh Tajbakhsh, Mohammad Reza Naimi-Jamal   +1 more
doaj   +1 more source

One-Pot Synthesis of Tetrazole–Triazole Bis-Heterocycles via Ugi–Azide Reaction

Chemistry Proceedings, 2023
Bioisosteres of amide bonds such as 4,5-disubstituted-1,2,3-triazoles (4,5-DS-1,2,3-Ts) and 1,5-disubstituted tetrazoles (1,5-DST) are present in compounds with important biological activities like those that are antineoplastic, antibacterial, antifungal,
Fidel Rodriguez-Lopez, Carlos Zárate-Hernández, Manuel A. Rentería-Gómez, Rocío Gámez-Montaño   +3 more
doaj   +1 more source

Ruthenium-catalyzed azide alkyne cycloaddition reaction: scope, mechanism and applications [PDF]

, 2016
The ruthenium-catalyzed azide alkyne cycloaddition (RuAAC) affords 1,5-disubstituted 1,2,3-triazoles in one step and complements the more established copper-catalyzed reaction providing the 1,4-isomer.
Akimova G., Akimova G., Akimova G., Anna Said Stålsmeden, Bader R. F. W., Chandrasekaran S., Das R., Fan W.-Q., Fokin V. V., Gruchlik A., Huisgen R., Johan R. Johansson, Keicher T., Levin J. I., Murahashi S.-I., Neumajer G., Nina Kann, Palaniraja J., Parsons J. G., Schilling C., Tamás Beke-Somfai, Trabocchi A., Yubo J., Zhou Y. B.   +23 more
core   +2 more sources

Synthesis and Cytotoxic Evaluation of 1H-1,2,3-Triazol-1-ylmethyl-2,3-dihydronaphtho[1,2-b]furan-4,5-diones

Anais da Academia Brasileira de Ciências, 2018
The 1,2-naphthoquinone compound was previously considered active against solid tumors. Moreover, glycosidase inhibitors such as 1,2,3-1H triazoles has been pointed out as efficient compounds in anticancer activity studies.
INGRID C. CHIPOLINE, EVELYNE ALVES, PAOLA BRANCO, LETICIA V. COSTA-LOTUFO, VITOR F. FERREIRA, FERNANDO C. DA SILVA   +5 more
doaj   +1 more source

Recent advances in the synthesis of triazole derivatives [PDF]

, 2015
Triazole ring system has attracted a continuously growing interest of synthetic organic chemists and those dealing with the medicinal compounds due to its versatile potential to interact with biological systems.
Ahmad, Matloob, Aslam, Sana, Jawwad, Muhammad, Khan, Imran Ahmad, Mansha, Asim, Raza Naqvi, Syed Ali, Zahoor, Fawad   +6 more
core  

Electroactive tetrathiafulvalene based pyridine-mono and -bis(1,2,3-triazoles) click ligands: synthesis, crystal structures and coordination chemistry [PDF]

, 2014
Electroactive ligands picoline-1,2,3-triazole-5-DM-TTF and lutidine-bis(1,2,3-triazole-5-DM-TTF) are synthesized by click chemistry following the ruthenium catalyzed azide–alkyne cycloaddition strategy.
N. Avarvari, T. Biet
core   +3 more sources

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   +2 more sources

Copper(II)-benzotriazole coordination compounds in click chemistry: a diagnostic reactivity study [PDF]

, 2018
This diagnostic study aims to shed light on the catalytic activity of a library of Cu(II) based coordination compounds with benzotriazole-based ligands.
Abdul-Sada, Alaa, Brookfield, Adam, Coles, Simon J, Csire, Gizella, Kostakis, George E, Kállay, Csilla, Loukopoulos, Edward, Lykakis, Ioannis N, Tizzard, Graham J   +8 more
core   +1 more source