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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

IMPACT FACTOR 2018: 0.961

CiteScore 2018: 0.91

SCImago Journal Rank (SJR) 2018: 0.263
Source Normalized Impact per Paper (SNIP) 2018: 0.505

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Volume 74, Issue 10


Chitosan-attached nano-Fe3O4 as a superior and retrievable heterogeneous catalyst for the synthesis of benzopyranophenazines using chitosan-attached nano-Fe3O4

Javad Safaei-Ghomi
  • Corresponding author
  • Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan 51167, IR Iran, Phone: +98 31 55912385, Fax: +98 31 55552935
  • Email
  • Other articles by this author:
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/ Maryam Tavazo
  • Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan 51167, IR Iran
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/ Hossein Shahbazi-Alavi
  • Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan 51167, IR Iran
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Published Online: 2019-09-07 | DOI: https://doi.org/10.1515/znb-2019-0091


A simple and rapid method for the preparation of benzopyranophenazines is presented, involving a one-pot four-component reaction of hydroxynaphthoquinone, o-phenylenediamine, benzaldehydes, and malononitrile with nano-Fe3O4@chitosan as an efficient heterogeneous solid acid catalyst under reflux conditions in ethanol. The catalyst is characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), magnetic susceptibility measurements, energy-dispersive X-ray spectroscopy (EDS), and Fourier transform infrared (FT-IR) spectroscopy. Atom economy, high catalytic activity, a wide range of products, excellent yields in short reaction times, and low catalyst loading are some of the important features of this method.

This article offers supplementary material which is provided at the end of the article.

Keywords: catalytic activity; chitosan; nano-Fe3O4; one-pot reaction; pyranophenazines


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About the article

Received: 2019-05-06

Accepted: 2019-08-12

Published Online: 2019-09-07

Published in Print: 2019-10-25

Funding Source: University of Kashan

Award identifier / Grant number: 159196/XXI

The authors are grateful to the University of Kashan for supporting this work (Grant NO: 159196/XXI).

Citation Information: Zeitschrift für Naturforschung B, Volume 74, Issue 10, Pages 733–738, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-2019-0091.

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