Sustainable synthesis of 2,4-diarylquinoline derivatives using recyclable BiFeO3 nanocatalyst in ionic liquid

Abstract

In continuation of our program, the purpose of the present investigation was to develop a highly efficient and eco-friendly catalytic system comprising bismuth ferrite nanoparticles (BiFeO3 NPs) in an ionic liquid in a single-pot for the production of 2,4-diarylquinoline derivatives through a three-part reaction of aromatic aldehydes, alkynes, and aniline derivatives. FTIR, SEM, TEM, TGA, BET, VSM, XRD, EDX, and elemental mapping were used in order to create and elucidate the structural and magnetic properties of the BiFeO3 nanoparticles. The catalyst demonstrated excellent reusability, in line with green chemistry principles, maintaining its activity for at least eight consecutive cycles. High catalytic activity, compliance with green chemistry principles, and excellent recyclability of BiFeO3 nanoparticles, which can be reused up to 8 times without loss of catalytic activity, are some of the advantages of this approach. The catalyst's magnetic property can facilitate separation and recycling, while the use of ionic liquids as reaction solvents is environmentally benign. The system's capacity to operate in moderate conditions and support a wide variety of substrates enables the synthesis of 2,4-diarylquinoline derivatives, which are both versatile and feasible.