Synthesis 2014; 46(07): 917-922
DOI: 10.1055/s-0033-1338595
paper
© Georg Thieme Verlag Stuttgart · New York

Magnetite–Sulfuric Acid Magnetic Nanoparticles: Preparation and Applica­tion in Synthesis of Mono-, Bis-, and Tris-14H-Dibenzo[a,j]xanthen-14-yl­arenes under Solvent-Free Conditions

Authors

  • Ali Reza Karimi*

    Department of Chemistry, Faculty of Science, Arak University, Arak 38156-8-8349, Iran   Fax: +98(861)4173406   Email: a-karimi@araku.ac.ir
  • Zeinab Dalirnasab

    Department of Chemistry, Faculty of Science, Arak University, Arak 38156-8-8349, Iran   Fax: +98(861)4173406   Email: a-karimi@araku.ac.ir
  • Marzie Karimi

    Department of Chemistry, Faculty of Science, Arak University, Arak 38156-8-8349, Iran   Fax: +98(861)4173406   Email: a-karimi@araku.ac.ir
Further Information

Publication History

Received: 28 October 2013

Accepted after revision: 12 January 2014

Publication Date:
11 February 2014 (online)


Graphical Abstract

Preview

Abstract

Novel magnetite–sulfuric acid (Fe3O4·SO3H) magnetic nanoparticles were prepared by the direct reaction of chlorosulfonic acid with magnetite nanoparticles, and characterized by IR spectroscopy, thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy. The catalytic activity of the Fe3O4·SO3H nanoparticles in the reaction of 2-naphthol with aryl mono-, di- and trialdehydes was examined, and these catalysts were shown to exhibit remarkable catalytic performance in the solvent-free synthesis of mono-, bis-, and tris-14H-dibenzo[a,j]xanthen-14-ylarenes. The catalyst retained its activity for several cycles.

Supporting Information