Silver(I) dithiocarbamate on modified magnetic cellulose: Synthesis, density functional theory study and application

Abstract

A magnetically retrievable catalytic system involving Ag(I) dithiocarbamate supported on functionalized cellulose was prepared. The structure of this hybrid nano-composite was characterized by various techniques. In addition, to describe the metal-ligand interactions present in the nano-composite, covalent and electrostatic interactions, density functional theory model and quantum theory of atoms in molecule method were employed. The resultant nano-composite exhibits remarkable catalytic efficacy in the synthesis of 2-amino-6-(2-oxo-2H-chromen-3-yl)-4-phenylnicotinonitriles from the reaction of 3-acetylcoumarin, aromatic aldehydes, and malononitrile. Its recoverability and reusability for this catalyst was examined in several runs, which showed no appreciable loss after five runs. The facile accessibility to the starting materials, and conducting the reactions in the eco-friendly and cost-effective conditions are the other merits of such new catalyst. Ambient reaction conditions, wide substrate scope, and facile accessibility to the starting materials, are some of the other outstanding features of this protocol that make it economic and sustainable.

Fibroin‐functionalized magnetic carbon nanotube as a green support for anchoring silver nanoparticles as a biocatalyst for A3 coupling reaction

“…The magnetic behavior of CNT–Fe 3 O 4 –fibroin–Ag was assessed by VSM at room temperature. The curve in Figure indicates that the values of the saturation magnetization of CNT–Fe 3 O 4 –fibroin–Ag (39.13 emu/g) are lower than those of Fe 3 O 4 NPs (61.60 emu/g) which is related to the presence of nonmagnetic species such as fibroin, CNT, and Ag NPs in the nanocomposite. Nevertheless, the catalyst can still be quickly and efficiently disengaged from the reaction system by an outer magnetic force.…”

A systematic review on silica-, carbon-, and magnetic materials-supported copper species as efficient heterogeneous nanocatalysts in “click” reactions

“…Nemati et al synthesized a modified cellulose-based nanomagnetite composite to support copper(I) iodide [111]. Cellulose-NH 2 (171) was prepared by the reaction of microcrystals of cellulose (170) with APTES in anhydrous dimethylformamide by stirring at room temperature for 2 h. The material 171 was gathered by centrifugation and washed with anhydrous DMF.…”

Silver Nanoparticles Supported on Mesoporous Triazine Carbon Material: A Versatile Catalyst for Reduction of Nitroaromatic Compounds

“…Based on the aforesaid evaluation and in continuation of our concern in extension of new heterogeneous nano‐catalyst including of their studying in utilization of organic transformations, in this research, we narrate the preparation and characterization of new heterogeneous catalyst system, which consists of silver particles decorated on mesoporous covalent triazine framework (Ag/mCTF) by the newly designed precursor containing nitrile groups. The lately designed pre‐material was synthesized with a reaction of melamine and chloroacetonitrile in optimum condition.…”