Synthesis and characterization of a novel Fe₃O₄@SiO₂–BenzIm-Fc[Cl]/BiOCl nano-composite and its efficient catalytic activity in the ultrasound-assisted synthesis of diverse chromene analogs

Abstract

A new magnetic nano-catalyst bearing ionic liquid, ferrocene and BiOCl was synthesized and its catalytic activities were evaluated in the synthesis of a wide variety of 2-amino-3-cyano-4<italic>H</italic>-chromene derivatives (54 compounds) under ultrasound irradiation.