-functionalized magnetic nanoparticles as an efficient and reusable catalyst for one-pot synthesis of -amino phosphonates

Nanomagnetic () was prepared via grafting sulfonic acid on the silica-coated magnetite nanoparticles (MNPs). The catalytic activity of the prepared was probed through the one-pot synthesis of N-hydroxy--amino phosphonates and -amino phosphonates via three-component couplings of phenylhydroxylamine or amines with aldehydes and trialkyl phosphites at room temperature. The synthesized were characterized by XRD, FT-IR, and SEM. The recoverability of the catalyst was achieved by a simple magnetic decantation and reused at least five times without significant degradation in catalytic activity. The catalytic activity of the prepared was probed through the one-pot synthesis of N-hydroxy--amino phosphonates and -amino phosphonates via three-component couplings of phenylhydroxylamine or amines with aldehydes and trialkyl phosphites at room temperature.