Chlorosulfonic acid supported Piperidine-۴-carboxylic acid (PPCA) functionalized Fe۳O۴ nanoparticles (Fe۳O۴-PPCA): as a Green Catalyst for the Synthesis of ۲-arylbenzimidazoles

A facile, rapid and solvent-free method for the conversion of o-phenylenediamine and arylaldehydes to the corresponding ۲-aryl-benzimidazoles using chlorosulfonic acid supported Piperidine-۴-carboxylic acid (PPCA) functionalized Fe۳O۴ nanoparticles (Fe۳O۴-PPCA) as a more robust and efficient catalyst under solvent free in good to excellent yields, is reported. The magnetic nanocatalyst can be readily recovered easily by applying an external magnet device and reused for at least ۱۰ reaction runs without considerable loss of reactivity.

کلیدواژه ها:

Chlorosulfonic acid supported Piperidine-۴-carboxylic acid (PPCA) functionalized Fe۳O۴ nanoparticles (Fe۳O۴-PPCA) ، ۲-aryl-benzimidazoles ، Solvent under ، Green Catalyst