Immobilized biogenic copper nanoparticles from metallic wastewater as a catalyst for triazole synthesis by a click reaction using water as a solvent

Abstract

In this study, biogenic copper nanoparticles from metallic wastewater were examined for triazoles synthesis by click reaction. The size of the copper nanoparticles obtained by biogenic sulfate reduction of synthetic...

Synthesis of Nitrogen- and Oxygen-Containing Heterocycles Catalysed by Metal Nanoparticles Reported in 2022

“…Scheme 5 1,3-Dipolar cycloaddition of chalcones (19/23) on isatins (20) with tetrahydro isoquinolines (21) Kumar and Pakshirajan synthesised 1,2,3-triazoles (27) by the three-component aqueous click reaction of several alkynes (25) and aryl azides (26) using biogenic copper NPs (PVA-SA-CuNPs) as a catalyst at 30 °C (Scheme 6). 61 The CuNPs were prepared via immobilisation in polyvinyl alcohol (PVA) and sodium alginate (SA), which were characterised via FE-SEM, FE-TEM, EDX, FT-IR, and UV/Vis spectroscopy, and by TGA. Herein, the FE-TEM imagined the dimensions of the NPs to be in the range of 14-17 nm.…”

“…Quinazolinones are difficult to make synthetically because they require multiple steps, expensive starting ingredients, and strong bases or oxidants in excess. A tandem hydrogen-transfer strategy from substituted 2-nitrobenzonitrile (59) and substituted benzyl alcohols (60) under the additive-free conditions (Scheme 15) in toluene at 140 °C used the carbon-supported Co heterogeneous catalyst (Co@NSC-1) containing dispersed CoNPs and the N,S codoped carbon support to produce quinazolinones (61). 69 The pyrolysis of Co/Zn, zeolitic imidazolate frameworks (ZIFs), and thiourea produced the catalysts, which were then studied using SEM, TEM, XRD, HR-TEM, EDX, XPS, and other techniques.…”

A New Insight Into The Huisgen Reaction: Heterogeneous Copper Catalyzed Azide‐Alkyne Cycloaddition for the Synthesis of 1,4‐Disubstituted Triazole (From 2018–2023)

“…Kumar and his co‐worker reported a biogenic copper nanoparticle from metallic waste water was examined for the synthesis of triazoles by the click reaction [99] . The copper nanoparticles, with sizes ranging from 5 to 10 nm, were obtained through biogenic sulfate reduction of synthetic wastewater employing sulfate‐reducing bacteria.…”

“…Kumar and his co-worker reported a biogenic copper nanoparticle from metallic waste water was examined for the synthesis of triazoles by the click reaction. [99] The copper nanoparticles, with sizes ranging from 5 to 10 nm, were obtained through biogenic sulfate reduction of synthetic wastewater employing sulfate-reducing bacteria. These copper nano-particles were immobilized within polyvinyl alcohol and sodium alginate (PVA-SA-CuNPs) and subsequently subjected to characterization through various techniques, including FESEM, EDX, FETEM, TGA, XRD, and UV-vis spectroscopy.…”