New Acetamidine Cu(II) Schiff base complex supported on magnetic nanoparticles pectin for the synthesis of triazoles using click chemistry

Abstract

In this project, the new catalyst copper defines as Fe3O4@Pectin@(CH2)3-Acetamide-Cu(II) was successfully manufactured and fully characterized by different techniques, including FT-IR, XRD, TEM, FESEM, EDX, VSM, TGA, and ICP analysis. All results showed that copper was successfully supported on the polymer‐coated magnetic nanoparticles. One of the most important properties of a catalyst is the ability to be prepared from simple materials such as pectin that’s a biopolymer that is widely found in nature. The catalytic activity of Fe3O4@Pectin@(CH2)3-Acetamide-Cu(II) was examined in a classical, one pot, and the three-component reaction of terminal alkynes, alkyl halides, and sodium azide in water and observed, proceeding smoothly and completed in good yields and high regioselectivity. The critical potential interests of the present method include high yields, recyclability of catalyst, easy workup, using an eco-friendly solvent, and the ability to sustain a variety of functional groups, which give economical as well as ecological rewards. The capability of the nanocomposite was compared with previous works, and the nanocomposite was found more efficient, economical, and reproducible. Also, the catalyst can be easily removed from the reaction solution using an external magnet and reused for five runs without reduction in catalyst activity.

Isocyanide Cu(I) complexes with unexpected μ2‐bridging pseudohalides: Synthesis, characterization and catalytic activity towards CuAAC

“…1 H and 13 C{ 1 H} NMR data and spectra are collected in the Supporting Information for completeness (Table S2 and Figures S18–S46). The characterization data is in agreement with the data reported in the literature for the same compounds obtained with different methods 17,61–69 . General quantitative yields were obtained in these conditions with the presence of hindered groups, both aromatic and aliphatic alkynes (see, for instance, T1–T4 ; T5–T8 ; T11 ).…”

TiO2/g-C3N4/SO3H(IL): Unique Usage of Ionic Liquid-Based Sulfonic Acid as an Efficient Photocatalyst for Visible-Light-Driven Preparation of 5-HMF from Cellulose and Glucose

“…In recent years, human beings have been facing a crisis of energy shortage and environmental pollution. These issues necessitate that the relevant chemical industries engaged in activities that impact the environment and energy supplies reconsider their use of alternate energy resources to maximize efficiencies, thus reducing the harmful impact on the environment. − Accordingly, the producers of chemical products must bear in mind the environment, health, safety, and economic impacts of their products. Lately, adherence to the green chemistry tenets has given rise to the emergence of a diverse range of chemical technologies, in large part due to the investment from government and nongovernment agencies.…”

Research on the catalytic activity of MNP-[Dop-OH]-CuBr2 nanocomposites: novel and stable reusable nanocatalysts for the synthesis of 1,3,5-triazine derivatives

“…Magnetic nanoparticles are very suitable supports for linking catalysts. 10 These catalysts can be separated via magnetic separation after the chemical process is over and reused after regeneration. 11 Among magnetic nanoparticles, Fe 3 O 4 nanoparticles are highly suitable due to their magnetic properties, chemical stability, and low toxicity.…”