Zirconium Doped Ceria Nanoparticles: An Efficient and Reusable Catalyst for a Green Multicomponent Synthesis of Novel Phenyldiazenyl–Chromene Derivatives Using Aqueous Medium
| Autor: | T. Vinodkumar, Lingala Suresh, G. V. P. Chandramouli, P. Sagar Vijay Kumar, Benjaram M. Reddy |
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| Rok vydání: | 2016 |
| Předmět: |
Zirconium
Materials science 010405 organic chemistry Renewable Energy Sustainability and the Environment General Chemical Engineering Metal ions in aqueous solution Inorganic chemistry Nanoparticle chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Oxidation state Yield (chemistry) Environmental Chemistry Nuclear chemistry Malononitrile |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 4:2376-2386 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.6b00056 |
| Popis: | Zirconium doped ceria nanoparticles are found to be efficient heterogeneous catalysts for the multicomponent reaction of 1,3-dicarbonyl compounds with 4-hydroxy-3-methoxy-5-(substituted-phenyl-diazenyl) benzaldehydes and malononitrile to yield the corresponding 2-amino-4-(4-hydroxy-3-methoxy-5-(substituted-phenyl-diazenyl)-chromene-3-carbonitrile derivatives in water medium. The results show that nanosized CeO2–ZrO2 is a potential catalytic material for synthesis of title compounds in high yields. The used catalyst was recovered and reused several times without significant loss of catalytic activity, which is an essential parameter of green synthesis. The formation, size, and oxidation state of the metal ions present in the material is confirmed by powdered X-ray diffraction, transmission electron spectroscopy, and X-ray photoelectron spectroscopy techniques. |
| Databáze: | OpenAIRE |
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