116557-89-2Relevant articles and documents
Magnetically recoverable CuFe2O4 nanoparticles: Catalyzed synthesis of aryl azides and 1,4-diaryl-1,2,3-triazoles from boronic acids in water
Kumar, A. Suresh,Reddy, M. Amarnath,Knorn,Reiser,Sreedhar
, p. 4674 - 4680 (2013)
Magnetically recoverable and reusable CuFe2O4 nanoparticles are shown to be highly efficient catalysts for the one-pot synthesis of biologically important 1,4-diaryl-1,2,3-triazoles starting from boronic acids, sodium azide, and acetylenes. The use of aqueous reaction medium at room temperature, the low cost and facile recovery of the catalyst by application of an external magnetic field, and consistently high catalytic efficiency for at least three consecutive cycles renders the protocol operationally attractive. Magnetic and catalytically competent CuFe 2O4 nanoparticles proved to be highly efficient in the three-component synthesis of 1,4-diaryl-1,2,3-triazoles, a class of compounds that has been recognized for its anticancer activity. Copyright
Ligand-accelerated Cu-catalyzed azide-alkyne cycloaddition: A mechanistic report
Rodionov, Valentin O.,Presolski, Stanislav I.,Diaz, David Diaz,Fokin, Valery V.,Finn
, p. 12705 - 12712 (2007)
The experimental rate law for the Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction was found to vary in complex ways with concentration, the presence of chloride ion, and the presence of accelerating ligands. Several examples of discontinuous (
CuO nanostructures of variable shapes as an efficient catalyst for [3 + 2] cycloaddition of azides with terminal alkyne
Kaur, Anupamjeet,Mann, Sukhmani,Goyal, Bhupesh,Pal, Bhupender,Goyal, Deepti
, p. 102733 - 102743 (2016)
CuO nanostructures of variable shapes: CuO nanospheres (5-10 nm), CuO nanorods (W × L = 24-27 nm × 124-140 nm) and CuO nanowires (W × L = 8-10 nm × 230-270 nm) have been synthesised to study the effect of shape of the catalyst on the Cu(i)-catalysed "click" azide-alkyne cycloaddition. Cu(i) species were generated in situ by the reduction of CuO nanostructures in the presence of sodium ascorbate. CuO nanowires exhibited highest catalytic efficiency for the cycloaddition reaction between azide and terminal alkyne, featuring short reaction time, soft reaction conditions and complete regioselectivity. We have further extended the study by using azides with varying functional groups (-OCH3 and -NO2) and studied the effect of shape of the nanostructures on the rate of the reaction and yield of the triazole products. The activity trend observed was: CuO-NW > CuO-NR > CuO-NS, irrespective of the presence of electron withdrawing or donating groups on the azide.
Combining ethylenediamine and ionic liquid functionalities within SBA-15: A promising catalytic pair for tandem Cu–AAC reaction
Hosseini, Habib Golchin,Doustkhah, Esmail,Kirillova, Marina V.,Rostamnia, Sadegh,Mahmoudi, Ghodrat,Kirillov, Alexander M.
, p. 96 - 102 (2017)
This paper discloses the assembly and characterization of an advanced heterogeneous catalyst formulated as CuI@SBA-15/PrEn/ImPF6. It is based on a mesoporous silica SBA-15 skeleton which bears a supported ethylenediamine/CuI complex and covalently anchored imidazolium/PF6 ionic liquid. This catalyst was successfully applied in tandem methods for triazole synthesis starting from different substrate pairs: aryl halides and aryl acetylenes (method A), arylboronic acids and aryl acetylenes (method B). The CuI@SBA-15/PrEn/ImPF6 catalyst showed high activity (up to 90% yields of triazole products under optimized reaction conditions), high stability and no appreciable leaching of CuI owing to its strong binding via the coordination with PrEn functionality. Therefore, the catalyst can be recycled for several consecutive runs (7–14 cycles) in this new synthetic method. For both methods A and B, specific types of green approaches were developed and the favorable products were produced in high yields.
CuO–NiO bimetallic nanoparticles supported on graphitic carbon nitride with enhanced catalytic performance for the synthesis of 1,2,3-triazoles, bis-1,2,3-triazoles, and tetrazoles in parts per million level
Gajurel, Sushmita,Dam, Binoyargha,Bhushan, Mayank,Singh, L. Robindro,Pal, Amarta Kumar
, (2021/12/09)
The unification of CuCl2·2H2O and NiCl2·6H2O with the support of graphitic carbon nitride yielded to form an efficient, synergistic, bimetallic nano-catalyst CuO–NiO@g-C3N4. FT-IR, SEM, TEM
Copper(I)-chitin biopolymer based: An efficient and recyclable catalyst for click azide–alkyne cycloaddition reactions in water
Bahsis, Lahoucine,Ablouh, El-Houssaine,Hachim, Mouhi Eddine,Anane, Hafid,Taourirte, Moha,Julve, Miguel,Stiriba, Salah-Eddine
, (2021/04/27)
The naturally occurring α-chitin biopolymer was employed for the immobilisation of copper(I) ion, resulting into a new bioconjugate complex, namely, Cu(I)-α-chitin (CuI-CHT) with catalytic efficiency in copper-catalysed azide–alkyne cycloaddition reaction
