Cu(II) immobilized on Fe 3O4@Agarose nanomagnetic catalyst functionalized with ethanolamine phosphate–salicylaldehyde Schiff base: A magnetically reusable nanocatalyst for preparation of 2-substituted imidazolines, oxazolines, and thiazolines

Herein we synthesized Cu(II) immobilized on Fe 3 O4 @Agarose functionalized with ethanolamine phosphate– salicylaldehyde Schiff base (Fe 3 O4 @Agarose/SAEPH2 /Cu(II)) as a new and cost-effective nanomagnetic catalyst. The nanomagnetic catalyst was characterized by FT-IR, XRD, VSM, SEM-EDX, TEM, TGA, and ICP techniques and it was found that the particles were about 9–25 nm in size and spherical with entrapment of the Fe 3 O4 particles in the hollow pore structure of the agarose. The prepared nanomagnetic catalyst showed excellent activity for preparation of 2-substituted imidazolines, oxazolines, and thiazolines.