Introduction of a new high yielding method for the synthesis of 1, 8-dioxo-octahydroxanthenes using W-doped ZnO nanocomposite

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• 作者：Fatemeh Shaabani Arbosara ; Farhad Shirini…
• 关键词：1 ; 8 ; Dioxo ; octahydroxanthenes ; Aldehyde ; Protected aldehydes ; W ; doped ZnO nanocomposite
• 刊名：Journal of Nanostructure in Chemistry
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：5
• 期：1
• 页码：55-63
• 全文大小：666 KB
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• 刊物主题：Nanochemistry;
• 出版者：Springer Berlin Heidelberg
• ISSN：2193-8865

文摘

W-doped ZnO nanocomposite was easily prepared by sol–gel method. The sample was characterized using a variety of techniques including X-ray diffraction, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma and BET surface area measurement. This reagent can be used as an efficient and heterogeneous catalyst for the preparation of 1, 8-dioxo-octahydroxanthenes from aldehydes in ethanol under mild conditions. The structures of the products were characterized by their physical constants, comparison with authentic samples and IR, 1H NMR and 13C NMR spectroscopy. Easy preparation of the catalyst, mild reaction conditions, easy workup procedure, excellent yields and short reaction times are some advantages of this work. In addition, in this article and for the first time the preparation of 1, 8-dioxo-octahydroxanthenes from the protected derivatives of aldehydes including oximes, semicarbazones and 1,1-diacetates is reported.