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بیست و نهمین کنفرانس شیمی آلی ایران
Preparation of RGO Aerogel/TEPA/ZnO-CuO catalyst and its use in Knoevenagel condensation
نویسندگان :
Fatemeh Golmiri ( دانشگاه مازندران ) , Mahmood Tajbakhsh ( دانشگاه مازندران ) , Hamid Emadi ( دانشگاه مازندران ) , Pouya Taheri ( دانشگاه مازندران )
کلید واژه ها :
Aerogels،Reduced graphene oxide aerogels،4h-Benzopyran
چکیده مقاله :
Aerogels, a unique class of materials known for their high porosity and low density, have found application as catalysts in various organic reactions. One particular area where aerogels have shown promise is in asymmetric direct aldol reactions in aqueous solutions [1]. Aerogels also exhibit outstanding capabilities for the sorption of spills and gases [2], being useful in selective captures for catalysis and analytical purposes and remediation. Herein, First, reduced graphene oxide aerogel was synthesized hydrothermally, and then tetraethylene pentamine, zinc and copper nanoparticles (precipitated by co-precipitation) were added to the RGO Aerogel/TEPA/ZnO-CuO nanocomposite. Produced nanocomposites showed significant catalytic activity in the synthesis of tetrahydrobenzopyran compounds using benzaldehyde, dimedone, and malononitrile derivatives in ethanol solvent at reflux condition. 4H-benzo[b]pyrans represent one of the most important classes of heterocyclic compounds that have substantial pharmaceutical and biological activities. These compounds are used as anticancer agents, for example, the 4H-benzo[b]pyran derivative, topotecan, which is an inhibitor of topoisomerase I [3].
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