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Fe3O4@SiO2 nanoparticles: An efficient, green and magnetically reusable catalyst for the one-pot synthesis of 14-aryl-14H-dibenzo[a,i]xanthene-8,13-dione derivatives | ||
Iranian Journal of Catalysis | ||
مقاله 16، دوره 6، Issue 3- Special issue: Nanocatalysis، آبان 2016، صفحه 203-211 اصل مقاله (1.64 M) | ||
نوع مقاله: Articles | ||
نویسندگان | ||
Mohammad Ali Ghasemzadeh* ؛ Mina Azimi-Nasrabad؛ Javad Safaei-Ghomi | ||
Department of Chemistry, Qom Branch, Islamic Azad University, Qom, P.O. Box 37491-13191. R. Iran | ||
چکیده | ||
An efficient and eco-friendly method for the one-pot synthesis of 14-aryl-14H-dibenzo [a,i]xanthene-8,13-dione derivatives has been developed in the presence of Fe3O4@SiO2 core-shell nanoparticles. The multi-component reactions of 2-hydroxy-1,4-naphthoquinone, β-naphthol and aldehydes were efficiently catalyzed using novel nano-scale materials under reflux conditions. The present method offers several advantages such as environmentally benign, simple work-up, excellent yield of products, short reaction times, little catalyst loading and facile catalyst separation. The nanomagnetic catalyst could be readily recovered using a simple external magnet and reused several times without any significant loss in activity. The catalyst was fully characterized by FT-IR, SEM, XRD, EDX and VSM analysis. | ||
کلیدواژهها | ||
Multi-component reactions؛ Nanoparticles؛ Core-shell؛ Fe3O4@SiO2؛ Xanthene | ||
مراجع | ||
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