Preparation and characterization of ZrO2 supported Fe3O4 MNPs as an effective and reusable superparamagnetic catalyst for the riedl?nder synthesis of quinoline derivatives

摘要

In this study, a convenient, appropriate and eco-friendly method for the synthesis of quinoline derivatives via Friedl?nder reaction has been developed by using ZrO2/Fe3O4-MNPs as an effective and reusable heterogeneous catalyst. The morphology of ZrO2/Fe3O4-MNPs has been studied by XRD, FT-IR, SEM, TEM and VSM techniques. Green procedure, straight and easy work-up, high yields of the products and good reaction times are the benefits of this procedure. Further, the catalyst can be recovered by external magnetic field and reused at least for three times without a considerable decrease in its catalytic activity.