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Alumina-Supported Cobalt Nanoparticles Efficiently Catalyzed the Synthesis of Chromene Derivatives under Solvent-Free Condition

Journal: Chemical Methodologies (Vol.4, No. 5)

Publication Date:

Authors : ; ; ;

Page : 565-571

Keywords : Co/Al2O3 nanocatalyst; nanocatalyst; Resorcinol; 2-hydroxy naphthalene; Chromenes; Solvent-free condition;

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Abstract

In this research study, an efficient approach is reported for the solvent-free synthesis of various chromene derivatives catalyzed by alumina-supported cobalt nanoparticles in high yields. Alumina-supported cobalt nanoparticles (Co/Al2O3 nanocatalyst), efficiently catalyzed the reaction between the resorcinol or 2-hydroxy naphthalene with benzaldehyde and malononitrile into chromene derivatives in high efficiency. This procedure allowed us to obtain corresponding products in short reaction times, simple work-up, and high yields. Experimental procedure with Co/Al2O3 nanocatalyst is very simple and the catalyst is easily removed by filtration. The catalyst was also found to be recyclable and can catalyze synthesis of the chromenes up to 5 times well.

Last modified: 2020-07-07 21:31:48