小说设计MgZrO3@Fe2O3@ZnO作为核壳纳米催化剂:合成吡唑衍生物的有效策略

IF 0.9 Q4 CHEMISTRY, PHYSICAL
A. Borhade, Y. R. Shelke, V. Bobade, D. Tope, S. Kushare, J. A. Agashe
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引用次数: 0

摘要

近年来,催化技术在制药企业中得到了广泛的应用。本文报道了一种合成吡喃吡唑的新方法。以MgZrO3@Fe2O3@ZnO为新型核壳纳米催化剂,一锅法合成吡喃吡唑,提高了反应速率、选择性、易于加工和可回收性。方法:采用溶胶-凝胶法制备MgZrO3@Fe2O3@ZnO核壳催化剂。为了开发新的催化反应,对合成的MgZrO3@Fe2O3@ZnO核壳纳米颗粒进行了XRD、TEM和BET比表面积分析。TEM图像显示,纳米催化剂的平均粒径为20 nm, BET比表面积为58.93 m2/g。新型MgZrO3@Fe2O3@ZnO核壳纳米颗粒作为一锅法合成吡喃吡唑的高效可回收催化剂。利用溶胶-凝胶法,我们开发了一种简便的MgZrO3@Fe2O3@ZnO核壳纳米颗粒合成途径。综上所述,本文首次报道了新型MgZrO3@Fe2O3@ZnO在水合肼、乙酸乙酯(EAA)、丙二腈和不同芳香醛在乙醇中的一锅四组分反应合成吡喃吡唑的新应用。该方法具有使用MgZrO3@Fe2O3@ZnO催化剂用量少、产率好、操作简便、反应时间短、催化剂与反应介质分离时间短、催化剂可回收等特点。这种方法的重要性在于使用对环境无害的催化剂,避免有害的有机催化剂。最后,使用可回收催化剂可以大大节省回收过程中的溶剂和能源使用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design of Novel MgZrO3@Fe2O3@ZnO as a Core-Shell Nano Catalyst: An Effective Strategy for the Synthesis of Pyranopyrazole Derivatives
Catalysis has been widely applied in pharmaceutical companies in recent years. This paper reports a useful new approach for the synthesis of pyranopyrazoles. One-pot synthesis of pyranopyrazoles using MgZrO3@Fe2O3@ZnO as a novelcore–shell nanocatalyst which increases reaction rate, selectivity, ease of work-up and recyclability of the supports. Method: The present study deals with the synthesis of MgZrO3@Fe2O3@ZnO core-shell catalyst using the sol-gel method. To develop the new catalytic reaction The synthesized MgZrO3@Fe2O3@ZnO core-shell nanoparticles were analysed using XRD, TEM and BET surface area. The nanocatalyst had an average particle size of 20 nm by TEM images and BET Surface area of 58.93 m2/g. Novel MgZrO3@Fe2O3@ZnO core-shell nanoparticles have been used as an efficient and recoverable catalyst for one-pot synthesis of pyranopyrazoles. Using a sol-gel approach, we have developed a facile synthesis pathway for MgZrO3@Fe2O3@ZnO core–shell nanoparticles. In conclusion, herein we report first time a new application of novel MgZrO3@Fe2O3@ZnO for the synthesis of pyranopyrazole using one-pot four component reaction of hydrazine hydrate, ethyl acetoacetate (EAA), malononitrile, and different aromatic aldehydes in ethanol. The salient features of this methodology includes use of small amount of MgZrO3@Fe2O3@ZnO catalyst, good yield ,easy operation, short reaction , time separation of catalyst from reaction medium and recyclability of catalyst . the importance of this methodology is the use of environmentally benign catalyst and avoid hazardous organic catalyst. Finally, use of recyclable catalyst can save substantially reduce solvent and energy usage during the recovery process.
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来源期刊
Current Organocatalysis
Current Organocatalysis CHEMISTRY, PHYSICAL-
CiteScore
2.00
自引率
0.00%
发文量
28
期刊介绍: Current Organocatalysis is an international peer-reviewed journal that publishes significant research in all areas of organocatalysis. The journal covers organo homogeneous/heterogeneous catalysis, innovative mechanistic studies and kinetics of organocatalytic processes focusing on practical, theoretical and computational aspects. It also includes potential applications of organocatalysts in the fields of drug discovery, synthesis of novel molecules, synthetic method development, green chemistry and chemoenzymatic reactions. This journal also accepts papers on methods, reagents, and mechanism of a synthetic process and technology pertaining to chemistry. Moreover, this journal features full-length/mini review articles within organocatalysis and synthetic chemistry. It is the premier source of organocatalysis and synthetic methods related information for chemists, biologists and engineers pursuing research in industry and academia.
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