Abstract
The syntheses of quinoxalines derived from 1,2-diamine and 1,2-dicarbonyl compounds under mild reaction conditions was carried out using a nanoparticle-supported cobalt catalyst. The supported nanocatalyst exhibited excellent activity and stability and it could be reused for at least ten times without any loss of activity. No cobalt contamination could be detected in the products by AAS measurements, pointing to the excellent activity and stability of the Co nanomaterial.
Highlights
Quinoxalines have been applied applied as building blocks for the development macrocyclic molecular receptors [12,13], as building blocks for the development of macrocyclicofmolecular receptors
The development ofactive efficient for accessing quinoxalines derivatives continues to Nanoparticle-supported catalysts can offer important advantages as compared to homogeneous be an active area of research
Offer important advantages to homogeneous with highmetal activities and and specificities different chemistries based on their excelling properties transition systems colloidal in nanoparticles
Summary
Quinoxaline derivatives are attractive N-containing heterocycles and these scaffolds have derivatives areinattractive heterocycles these scaffolds have attracted Quinoxaline much attention, syntheticN-containing chemistry [1,2,3]. The development ofactive efficient for accessing quinoxalines derivatives continues to Nanoparticle-supported catalysts can offer important advantages as compared to homogeneous be an active area of research. Offer important advantages to homogeneous with highmetal activities and and specificities different chemistries based on their excelling properties transition systems colloidal in nanoparticles. These include a good reusability coupled with (high surface areas, degenerated density of energy states and plasmon). Co/supported catalysts were previously to be highly and versatile for acid and redox areas, degenerated density of energy statesreported and plasmon) In this regard, catalyzed processes [54,55].
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