Abstract
Piperidine and piperazine immobilized on silica-coated γ-Fe2O3 magnetic nanoparticles were synthesized as new supported bases via the reaction of chloro-functionalized γ-Fe2O3@SiO2 with piperidine and piperazine, respectively. The resulting bases were employed as magnetically recyclable heterogeneous catalysts for the efficient one-pot three-component synthesis of β-phosphonomalonates. The catalysts were easily separated from the reaction mixture by using a magnet and recycled for five times without significant loss of the catalytic activity.
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