Triethylenetetramine-Grafted Magnetic Graphene Oxide (Fe₃O₄@GO-NH₂) as a Reusable Heterogeneous Catalyst for the One-Pot Synthesis of 2-Amino-4H-Benzopyran Derivatives

Abstract

Triethylenetetramine-grafted magnetic graphene oxide (Fe₃O₄@GO-NH₂) was used as a reusable heterogeneous catalyst in the preparation of 2-amino-4H-benzopyran derivatives. The characteristics of this method include green reaction conditions, easy separation, compatibility with the environment, the cost-effectiveness of the catalyst, and high yield (85–98%) in a short reaction time. It was also found that it could be reused for at least seven cycles without significant performance degradation.

Keywords:

• graphene oxide
• magnetic nanoparticles
• pyrano [2
• 3‐d] pyrimidinones
• tetrahydrobenzo[b]pyrans
• triethylenetetramine

Disclosure statement

No potential conflict of interest was reported by the author(s).