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Herein, we report the synthesis of copper nanoparticles (NP) at mild conditions using dual biopolymer, chitosan-alginate, modified magnetic nanoparticles as a protecting/stabilizing agent and sodium borohydride as a reducing agent. The obtained nanocomposite (Fe 3 O 4 /Chitosan-Alginate/Cu NPs) were physico-chemically assessed over FT-IR, FE-SEM, EDX, elemental mapping, ICP-OES, TEM, VSM, and XRD studies. The as-synthesized Fe 3 O 4 /Chitosan-Alginate/Cu NPs were explored as an efficient heterogeneous nanocatalyst in the aryl and heteroaryl C–N cross-coupling reactions with considerably high yields under mild conditions. The catalyst was isolated and reused for nine times with reproducible catalytic activity.

Cu Nanoparticles Anchored over Chitosan-Alginate Modified Magnetic Nanoparticles to Explore the C-N Heterocoupling Reactions