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Articles

Novel AlCl3@nano Fe3O4-SiO2: a benign multi-layer magnetite nanocatalyst for the three-component one-pot synthesis of spiro[benzochromeno [2,3-d]pyrimidin-indolines]

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Pages 365-374 | Received 19 Nov 2018, Accepted 29 Aug 2021, Published online: 29 Sep 2021
 

Abstract

In this paper, sublimated AlCl3 has been embedded on nanosilica-Fe3O4 core via a simple method to obtain novel AlCl3@nano Fe3O4-SiO2 nanostructure for the first time. The newly synthesized solid has been characterized by Fourier transformed infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDAX), vibrating sample magnetometer (VSM), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), Brunauer-Emmett-Teller (BET) measurements, and potentiometric titration techniques. The reactivity of the prepared nanoparticles was investigated in the synthesis of spiro[benzochromeno[2,3-d]pyrimidin-indolines] through the one-pot three-component condensation of different naphthols, isatin derivatives, and barbituric acids in the in refluxing ethanol successfully. The recovery and reusability of the nanostructure has also been examined within 4 runs without activity loss.

Graphical Abstract

Acknowledgment

The authors greatly acknowledge the partial support of Alzahra University Research Council.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

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