Bentonite ‐ Clay ‐ Supported Cuprous Iodide Nanoparticles (BENT‐ CuI NPs): A New Heterogeneous Catalyst in Diversity ‐ Oriented Synthesis of 1, 2, 3‐ Triazoles in Aqueous Medium

Abstract

Bentonite clay supported cuprous iodide nanoparticles (BENT‐CuI NPs) were prepared and demonstrated for the first time as an efficient heterogeneous catalyst in diversity oriented, green synthesis of 1,2,3‐triazoles by one‐pot, three component reaction between alkyl halides, arylboronic acids, or epoxides with alkynes and sodium azide in aqueous medium. The catalyst was characterized by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP‐AES), Energy Dispersive X‐ray Spectroscopy(EDS), Scanning Electron Microscopy (SEM), X‐Ray Powder Diffraction (XRD), Transmission Electron Microscopy (TEM) as well as Brunauer‐Emmett‐Teller (BET) techniques and was found to be reusable for five consecutive runs without significant loss of activity.

Zinc Oxide Nanoparticles as Efficient Heterogeneous Catalyst for Synthesis of Bio‐active Heterocyclic Compounds

“…Drug researchers have found success in using imidazo[1,2-a]pyridines with a ring junction to treat a variety of conditions, including those related to the heart, the brain, the gastrointestinal tract, and even viruses. [157] The eco-friendly synthesis of new imidazo[1,2-a] pyridine derivatives (67 and 70) was a simple MCRs in which aldehyde (28), 2-aminopyridine (65), and isocyanide (69) were combined in the presence of greener synthetic approach. The synthesized recyclable heterogeneous nanocatalyst was effective for the condensation reaction even without microwave treatment, but it took a longer time (10-18 h) for the reaction to finish.…”

“…Due to their high surface‐to‐volume ratios and highly active surface atoms, nanocatalysts are a promising alternative to conventional [56–60] . Nanocatalysts are of great importance in the context of environmentally conscious science, and in particular for catalysis, due to their nanocatalysts′ effectiveness [61–67] as a coating on silicate, aluminium oxide, titanium dioxide, fiberglass, ceramics, and activated carbon has been the subject of several research during the past decade [46,68–75] . Nanocatalysts are now widely used to produce heterocyclic compounds [76] .…”

An Overview on the Performance of 1,2,3-Triazole Derivatives as Corrosion Inhibitors for Metal Surfaces

“…β-Hydroxy-1,2,3-triazole derivatives were synthesized by the [3+2] cycloaddition reaction between styrene oxide (7) and alkynes (8, see Figure 7), the 1,2,3-triazoles being obtained in good yields. In this context, Souza et al [70] and Chavan et al [71] performed this reaction at room temperature. The first team carried out the reaction in the presence of copper(II) acetate, sodium ascorbate, and THF/H2O as a solvent mixture, while the second one used copper(I) iodide nanoparticles supported by bentonite clay BENTCuI nanoparticles, considered as an effective heterogeneous catalytic system in the high yield green synthesis of 1,2,3-triazoles by one-pot three-component reaction in water.…”

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

“…Exploration of wide range of procedures in catalysis to eliminate and deter harsh reaction conditions are constantly in practice. Recent reported methodologies includes DBU catalyzed triazoles in ionic liquids, [ 28 ] magnetic NPs supported Cu(I) catalyst, [ 29 ] bentonite clay supported cuprous iodide NPs, [ 30 ] spin‐canted CuFe 2 O 4 NPs, [ 31 ] and Cu/Al 2 O 3 surface under ball milling condition. [ 32 ]…”