1399486-91-9Relevant academic research and scientific papers
Copper(II)-Schiff Base Complex-Functionalized Polyacrylonitrile Fiber as a Green Efficient Heterogeneous Catalyst for One-Pot Multicomponent Syntheses of 1,2,3-Triazoles and Propargylamines
Li, Pengyu,Liu, Yuanyuan,Wang, Lu,Xiao, Jian,Tao, Minli
, p. 1673 - 1684 (2018/03/21)
A series of copper(II)-Schiff bases-functionalized polyacrylonitrile fiber catalysts were successfully prepared using copper acetate as copper source and characterized by elemental analysis, fourier-transfer infrared spectroscopy, ultraviolet-visible spectroscopy, X-ray photoelectron spectroscopy and inductively coupled plasma analysis. Excellent physical strength and thermal stability of the fiber catalysts were demonstrated by scanning electron microscopy, X-ray diffraction, thermogravimetric/differential scanning calorimetry analysis and mechanical strength measurements. Furthermore, these catalysts were successfully applied to one-pot multicomponent copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction and aldehyde, alkyne, amine (A3) coupling reaction in which the influences of different substituent groups on the catalytic activities of fiber catalysts were investigated in detail. Among them, the bis[N-ethyl-3,5-di-tert-butyl-salicylideneiminato]copper(II)-functionalized polyacrylonitrile fiber (PANS2F?Cu) as a green, efficient catalyst exhibited the best catalytic activity for its high hydrophobic micro-environment can aggregate the reactants to the catalytic sites and accelerate the reaction. In addition, the PANS2F?Cu has performed well in scaled-up experiment and shown excellent recyclability (at least ten times), and these enable it to have great potential for further applications. (Figure presented.).
Efficient synthesis and antibacterial activities of some novel 1,2,3-triazoles prepared from propargylic alcohols and benzyl azides
Hosseinzadeh, Rahman,Abolfazli, Mohammadreza Khadem,Mohseni, Mojtaba,Mohadjerani, Maryam,Lasemi, Zahra
, p. 1298 - 1305 (2015/04/27)
A simple and effective procedure for regioselective preparation of 1,2,3-triazoles from benzyl azides and propargylic alcohols is described using CuSO4·5H2O and sodium ascorbate. To screen the antibacterial activity of some newly synthesized triazole derivatives, minimum inhibitory concentration of 3d and 3k was evaluated against gram positive Staphylococcus aureus and Bacillus subtilis and gram negative Escherichia coli and Pseudomonas aeruginosa.
Preparation of Cu(OAc)2/MCM-41 catalyst and its application in the one-pot synthesis of 1,2,3-triazoles in water
Hosseinzadeh, Rahman,Sepehrian, Hamid,Shahrokhi, Farshid
, p. 415 - 421 (2012/10/29)
An efficient one-pot synthesis of 1,2,3-triazoles via the three-component coupling reaction between benzyl or alkyl bromides, terminal alkynes, and sodium azide in the presence of catalytic amounts of Cu(OAc)2/MCM-41 catalyst has been described
