During the past decade, a great deal of attention has been paid to developing greener chemical processes and synthetic methods. Catalysts bound to inorganic solids are widely used for organic transformations due to environmental and economical considerations [1]. Nanoparticles supported on a metal oxide as an inorganic solid, in particular magnetic nanoparticles (MNPs), have been extensively studied in the field of chemical catalysis, environmental protection, sensors, magnetic storage media, and clinical diagnosis treatments. MNPs have great potential in view of their recovery, since the magnetic separation of MNPs from the reaction mixture with an external magnet is simpler and more efficient than conventional separation with filtration or centrifugation. On the other hand, MNPs are accessible from inexpensive materials and can be easily supported by organic and inorganic materials. Recently, MNP-supported-copper ions have been used extensively in organic transformations.[2]. Herein, we report preparation, characterization Schiff base complex immobilized on nanomagnetic particles, Fe3O4@SiO2-CPS-CuL, and investigation of its catalytic activity in a three component reaction of 1 naphthol, malonitrile with aldehydes to synthesis 2-amino-4H-benzo[h]chromenes.
