A Simple, Efficient Synthesis of ۲-Aryl Benzimidazoles Using Propylsulfamic acid supported on to magnetic Fe۳O۴ nanoparticles (MNPs-PSA) as a Green Catalyst

A facile, rapid and solvent-free method for the conversion of o-phenylenediamine and arylaldehydes to the corresponding ۲-aryl-benzimidazoles using N-Propylsulfamic acid supported on to magnetic Fe۳O۴ nanoparticles (MNPs-PSA) 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

Keywords:

N-Propylsulfamic acid supported on to magnetic Fe۳O۴ nanoparticles (MNPs-PSA) , ۲-aryl-benzimidazoles , Solvent under , Green Catalyst