1036-21-1Relevant articles and documents
Microwave-assisted facile synthesis of propargylamine library by robust nitro functionalized cross-linked polystyrene resin supported Cu NPs
Sharma, Anuj S.,Kaur, Harjinder,Barot, Nirav
, (2018)
In the present investigation, we study catalytic activity of copper nanoparticles stabilized onto a nitro functionalized polystyrene resin (Cu NPs@ Nitro-Resin). The size of stabilized copper nanoparticles was found between 3 and 9?nm. This work reports a
Gold nanoparticles immobilized on lipoic acid functionalized SBA-15: Synthesis, characterization and catalytic applications
Anand, Narani,Ramudu, Pochamoni,Reddy, Kannapu Hari Prasad,Rao, Kamaraju Seetha Rama,Jagadeesh, Bharatam,Babu, Vemulapalli Sahithya Phani,Burri, David Raju
, p. 119 - 126 (2013)
Gold nanoparticles immobilized on lipoic acid functionalized SBA-15 (SBA-LAG) catalyst was synthesized via functionalization of SBA-15 with propylamine followed by tethering of lipoic acid and immobilization of gold nanoparticles. The structural and texct
Heavy metal removing by modified bentonite and study of catalytic activity
Kakaei, Saeed,Khameneh, Elham Sattarzadeh,Rezazadeh, Fardin,Hosseini, Majid Haji
, (2020)
Due to the high hydrophobicity and surface area, clays are efficient adsorbents for the removal of liquid impurities and purification of gases when they are modified. In this work, bentonite was modified with imidazole and imidazolium groups and resulting clays were characterized by different techniques such as 1H NMR, 13C NMR, TEM, SEM, XPS, TG, and FT-IR. Applications of these clays were studied in the removal of Co, Cu, and Pb in the wastewater. Effects of contact time, pH, initial heavy metal ions concentration, and kinetic were investigated. The catalytic activity of the metals adsorbed by imidazole modified bentonite was studied in A3 coupling reactions of various amines, aldehydes, and alkynes.
Magnetically separable ZnFe2O4 nanoparticles: A low cost and sustainable catalyst for propargyl amine and NH-triazole synthesis
Bordoloi, Ankur,Chetia, Swadhin,Garg, Anirban,Guha, Ankur Kanti,Hazarika, Roktopol,Kalita, Amlan Jyoti,Kulshrestha, Akshay,Kumar, Arvind,Phukan, Parmita,Sarma, Diganta
, (2021)
The multicomponent reaction (MCR) strategy for the construction of important molecular scaffolds is in trending nowadays and among them, A3-coupling stands in a significant position. Aldehyde, amine and alkynes are coupled in this particular reaction via C-H activation process. Herein, we have reported zinc ferrite nanoparticles as magnetically separable heterogeneous catalyst for A3-coupling reaction with attractive attributes like excellent productivity, selectivity and better reusability. Moreover, the catalyst can also be effectively applied for the synthesis of various NH-triazoles with quantitative yields of the products. A plausible mechanism has been proposed for the synthesis of NH-triazoles followed by validation with computational study.
Copper modified spherical MCM-41 nano particles: An efficient catalyst for the three-component coupling of aldehydes, amines and alkynes in solvent-free conditions
Abdollahi-Alibeik, Mohammad,Moaddeli, Ali
, p. 39759 - 39766 (2014)
Cu-MCM-41 nano particles have been shown to effectively catalyze the multi-component synthesis of propargylamines by the reaction of aldehydes, amines, and alkynes (A3coupling) effectively at 100 °C under solvent-free conditions. Spherical Cu-M
Fibroin-functionalized magnetic carbon nanotube as a green support for anchoring silver nanoparticles as a biocatalyst for A3 coupling reaction
Akbarzadeh, Parisa,Koukabi, Nadiya
, (2020)
Novel and powerful fibroin-functionalized magnetic carbon nanotube–supported silver nanoparticles (CNT–Fe3O4–fibroin–Ag) were successfully synthesized as a nontoxic and inexpensive biocatalyst. The structure of the organic–inorganic
Solvent-free synthesis of propargylamines via A3 coupling reaction and organic pollutant degradation in aqueous condition using Cu/C catalyst
Rathod, Pramod V.,Puguan, John Marc C.,Kim, Hern
, (2020)
The present report focuses on the efficient and operationally simple synthesis of biomass-derived carbon as support to immobilize copper particles as a catalyst for the one-pot synthesis of propargylamines from furfural via the A3 coupling reaction. This new catalyst showed remarkable catalytic performance leading to a 97% yield within 5 h at 80 °C using 5 mg (0.0022 mmol Cu) of Cu/C catalyst under solvent-free condition. Moreover, nitro-substituted compounds such as 4-nitrophenol (4-NP) are highly toxic and not easily degradable. Hence, a quick and effective method is required to neutralize these toxic compounds. The synthesized active support Cu/C catalyst having various electron-donating groups containing small amounts of Cu plays an essential role in the catalytic reduction of 4-NP (0.1 g). Using only 3 mg (0.0013 mmol Cu) of Cu/C catalyst and NaBH4 (10 mmol), a 99% yield (100% selectivity) in the aqueous condition at 25 °C was achieved. The catalytic reduction follows the pseudo-first-order kinetics with reaction rate constant of 0.028 s?1. Moreover, results demonstrate that the Cu/C catalyst has superior catalytic activity due to the presence of electron-donating molecules such as O, S, and N atoms, which enable synergistic effect in enhancing the overall catalytic performance. Notably, the recoverability and recyclability of the synthesized catalyst were evaluated for up to four cycles, which confirmed its stability in these cycles.
Gold nanoparticle stabilized dithiocarbamate functionalized magnetite carbon as promise clean nanocatalyst for A3-coupling organic transformation
Aghbash, Khadijeh Ojaghi,Alamgholiloo, Hassan,Pesyan, Nader Noroozi,Khaksar, Samad,Rostamnia, Sadegh
, (2021)
A novel, efficient, and core/shell nanosphere catalyst (Fe3O4@C-NHCS-Au0) was successfully synthesized with a movable magnetite core encapsulated in a carbon shell. It was modified using APTES (3-aminopropyltriethoxysilane
Efficient three-component coupling catalysed by mesoporous copper-aluminum based nanocomposites
Dulle, Jana,Thirunavukkarasu,Mittelmeijer-Hazeleger, Marjo C.,Andreeva, Daria V.,Shiju, N. Raveendran,Rothenberg, Gadi
, p. 1238 - 1243 (2013)
Traditional synthesis methods for propargylamines have several drawbacks. A recently developed alternative route is the so-called "A3 coupling" in which an alkyne, an aldehyde, and an amine are coupled together. Typically, these reactions are c
Nafion NR50 catalyzed A3-coupling for the synthesis of propargylamines via C-H activation
Kidwai,Jahan
, p. 462 - 469 (2011)
A one-pot, three-component coupling reaction of aldehydes, amines and alkyne (A3-coupling) via C-H activation using perflorinated resinsulphonic acid (Nafion NR50) as a recyclable and environmentally benign catalyst for the synthesis of proparg
