Continued research on pyrazoline derivatives with excellent biological activities has encouraged us to design and synthesize 1,3,5-trisubstituted pyrazoline series introducing NiFe2O4.Cu(OH)2 magnetic nanocomposite as a heterogeneous catalyst by the combination of highly substituted aryl aldehydes, substituted acetophenones, and acetyl hydrazine hydrate under ultrasound irradiation at 50oC. The NiFe2O4.Cu(OH)2 magnetic nanocomposite materials are characterized by […]
Sulfonated polystyrene/montmorillonite nanocomposite (OMMT/PS-SO3H) was prepared and used as a novel, efficient and inexpensive heterogeneous acid catalyst in the one-pot reaction three-component Mannich reaction of ketones, aromatic aldehydes and amines under solvent-free conditions. The catalyst was characterized by XRD, SEM, TG, BET and FT-IR techniques. This method has advantages of high yield, moderate to excellent […]
