An efficient magnetic composite with oxidizing properties was fabricated through the covalent bonding of a magnetic β-CD/MoO3 complex on a powdered pomegranate peel (PPP) support. This composite is novel, environmentally friendly, highly efficient, and low–toxicity. It is also a suitable oxidant, a natural plant base, and a recyclable magnetic catalyst. The magnetic catalyst was characterized by various techniques including FT-IR, XRD, SEM, EDS-map, TGA, and VSM. After it was prepared, the catalyst was investigated for its applicability in the dehydrogenation of 2,3-dihydro-1H-perimidines and the oxidation of pyridines. The main benefits of this composite are cheapness, easy separation due to its magnetic nature, and reusability for four times. The major advantages of the applied oxidation method are good product efficiency, easy workup, and environmentally friendly conditions to reduce environmental pollution.