Results 31 to 40 of about 11,801 (209)

Well-Defined Diimine Copper(I) Complexes as Catalysts in Click Azide-Alkyne Cycloaddition Reactions [PDF]

open access: yes, 2013
A series of 1,4-disubstituted 1,2,3-triazoles have been prepared in high yields while respecting the stringent Click criteria.
Diez-Gonzalez, S, Markalain Barta, J
core   +2 more sources

Microwave assisted metal-free approach to access 1,2,3-triazoles through multicomponent synthesis

open access: yesCurrent Research in Green and Sustainable Chemistry, 2020
The work illustrates multicomponent reaction of aldehydes, nitroalkanes and sodium azide for the metal-free synthesis of N-unsubstituted-1,2,3-triazoles using anthranilic acid as an organocatalyst under microwave irradiation. This is the first ever green
Anirban Garg   +2 more
doaj   +1 more source

Synthesis of new 1,4-disubstituted 1,2,3-triazoles using the CuAAC reaction and determination of their antioxidant activities

open access: yesAnais da Academia Brasileira de Ciências, 2021
This study describes the synthesis and antioxidant activity of new 1,4-disubstituted 1,2,3-triazoles. These compounds were generated semi-synthetically using the Cu(I)-catalysed azide-alkyne cycloaddition (CuAAC) reaction between ethyl 2-azidoacetate and
JOSEFA A. DA CUNHA LIMA   +6 more
doaj   +1 more source

Click Chemistry: 1,2,3‐Triazoles as Pharmacophores [PDF]

open access: yesChemistry – An Asian Journal, 2011
AbstractThe copper(I)‐catalyzed 1,2,3‐triazole‐forming reaction between azides and terminal alkynes has become the gold standard of ‘click chemistry’ due to its reliability, specificity, and biocompatibility. Applications of click chemistry are increasingly found in all aspects of drug discovery; they range from lead finding through combinatorial ...
Sandip G, Agalave   +2 more
openaire   +2 more sources

1,2,3-Triazoles as Amide-bond Surrogates in Peptidomimetics

open access: yesCHIMIA, 2013
1,2,3-Triazoles represent a class of heterocycles with interesting properties for application in peptide sciences since they closely resemble amide bonds while being stable to enzymatic degradation.
Ibai E. Valverde, Thomas L. Mindt
doaj   +1 more source

Enantiomer stability of atropisomeric 1,5-disubstituted 1,2,3-triazoles

open access: yesTetrahedron Chem, 2022
The synthesis and characterisation of axially chiral atropisomeric 1,5-disubstituted 1,2,3-triazoles is reported. Molecules designed to display restricted rotation about 1,2,3-triazole N-1-aryl or 1,2,3-triazole C-5-aryl bonds were investigated by ...
Fernanda Meloni   +6 more
doaj   +1 more source

1,2,3-Triazoles

open access: yes, 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

Glycerol: a biorenewable solvent for base-free Cu(I)-catalyzed 1,3-dipolar cycloaddition of azides with terminal and 1-iodoalkynes. Highly efficient transformations and catalyst recycling [PDF]

open access: yes, 2014
Ministerio de Ciencia e Innovacin (MICINN) of Spain [CTQ2010-14796, RYC-2011-08451]; MICINN; European Social ...
García Álvarez, Joaquín   +1 more
core   +1 more source

Alkyne-Azide Cycloaddition Catalyzed by Silver Chloride and “Abnormal” Silver N-Heterocyclic Carbene Complex

open access: yesThe Scientific World Journal, 2013
A library of 1,2,3-triazoles was synthesized from diverse alkynes and azides using catalytic amounts of silver chloride instead of copper compounds. In addition, a novel “abnormal” silver N-heterocyclic carbene complex was tested as catalyst in this ...
Aldo I. Ortega-Arizmendi   +2 more
doaj   +1 more source

Palladium-Catalyzed C–H Arylation of 1,2,3-Triazoles

open access: yesMolecules, 2016
Palladium(II) acetate, in combination with triphenylphosphine, catalyzes direct arylation of 1,4-disubstituted 1,2,3-triazoles effectively. This C–H arylation reaction provides facile access to fully substituted triazoles with well-defined regiochemistry.
Chengwei Zhang, Lin You, Chuo Chen
doaj   +1 more source

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