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Molybdate sulfonic acid: preparation, characterization, and application as an effective and reusable catalyst for octahydroxanthene-1,8-dione synthesis

Bahador Karami, Zahra Zare, and Khalil Eskandari

Department of Chemistry, Yasouj University, 75918-74831, Yasouj, Iran

 

E-mail: karami@mail.yu.ac.ir

Abstract: Molybdate sulfonic acid (MSA) as a highly efficient catalyst was synthesized and employed for the synthesis of octahydroxanthene-1,8-dione derivatives. MSA efficiently catalyzed condensation of a wide range of aryl aldehydes and cyclohexane-1,3-diones to obtain octahydroxanthene-1,8-diones. It was characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), and FT-IR spectroscopy. This catalyst can be recovered and reused several times in other reactions maintaining its high activity. This novel and green method is very cheap and has many advantages such as excellent yields, the use of recoverable and eco-friendly catalysts, and a simple work-up procedure.

Keywords: molybdate sulfonic acid – catalyst – cyclic 1,3-diketone – condensation reaction – solventfree

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-012-0263-y

 

Chemical Papers 67 (2) 145–154 (2013)

Friday, September 17, 2021

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