New Journal of Chemistry, Volume (41), No (24), Year (2017-12) , Pages (15485-15500)

Title : ( ZnII doped and immobilized on functionalized magnetic hydrotalcite (Fe3O4/HT-SMTU-ZnII): a novel, green and magnetically recyclable bifunctional nanocatalyst for the one-pot multicomponent synthesis of acridinediones under solvent-free conditions )

Authors: zeynab zareie , Batool Akhlaghinia ,

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Abstract

ZnII doped and immobilized on functionalized magnetic hydrotalcite (Fe3O4/HT-SMTU-ZnII) was prepared for the first time as a stable, long-lived, highly efficient and exceptional reusable magnetic nanocatalyst for the one-pot multi-component synthesis of acridinediones as an important class of heterocyclic compounds. The synthesized catalyst was characterized by various spectroscopic and microscopic techniques such as Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) analysis, Brunauer, Emmett and Teller (BET) surface area analysis, temperature programmed desorption (TPD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), vibrating sample magnetometry (VSM), inductively coupled plasma atomic emission spectroscopy (ICP-OES) and CHNS analysis. The results of characterizations showed the superparamagnetic nature of the catalyst with an average particle size of 20–60 nm which is plate-like in shape. Also, the results of the TPD analysis showed that the nanocatalyst has both acidic sites (site density: 22.66 mmol g1) and basic sites (site density: 8.49 mmol g1), and can act as a bifunctional nanocatalyst. The loading amount of ZnII (doped and immobilized) on functionalized magnetic hydrotalcite was indicated to be 4 mmol g1, obtained from the ICP-OES analysis. The catalytic activity of this new magnetic nanocatalyst (Fe3O4/HT-SMTU-ZnII) was examined in the multi-component reaction of aromatic aldehydes, dimedone, and various primary amines or NH4 + under solvent-free conditions towards the preparation of acridinedione derivatives in a short period of time. In all the cases, the catalyst could be easily recovered magnetically for at least six runs and the obtained product was isolated using a simple work-up procedure. In our protocol, the solvent-free conditions avoid the problems such as cost, handling, safety and pollution which are related to solvent use. The characteristics of the present methodology make the reaction suitable for scale-up and commercialization.

Keywords

, acridinedione, ZnII doped and immobilized on functionalized magnetic hydrotalcite (Fe3O4/HT-SMTU-ZnII), one-pot multi-component reaction, nanocatalyst
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@article{paperid:1065691,
author = {Zareie, Zeynab and Akhlaghinia, Batool},
title = {ZnII doped and immobilized on functionalized magnetic hydrotalcite (Fe3O4/HT-SMTU-ZnII): a novel, green and magnetically recyclable bifunctional nanocatalyst for the one-pot multicomponent synthesis of acridinediones under solvent-free conditions},
journal = {New Journal of Chemistry},
year = {2017},
volume = {41},
number = {24},
month = {December},
issn = {1144-0546},
pages = {15485--15500},
numpages = {15},
keywords = {acridinedione; ZnII doped and immobilized on functionalized magnetic hydrotalcite (Fe3O4/HT-SMTU-ZnII); one-pot multi-component reaction; nanocatalyst},
}

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%0 Journal Article
%T ZnII doped and immobilized on functionalized magnetic hydrotalcite (Fe3O4/HT-SMTU-ZnII): a novel, green and magnetically recyclable bifunctional nanocatalyst for the one-pot multicomponent synthesis of acridinediones under solvent-free conditions
%A Zareie, Zeynab
%A Akhlaghinia, Batool
%J New Journal of Chemistry
%@ 1144-0546
%D 2017

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