Synthesis of benzo[h]quinolone and benzo[c]acridinone derivatives by Fe3O4@PS-Arginine[HSO4] as an efficient magnetic nanocatalyst

Fe₃O₄ magnetic nanoparticles were synthesized and functionalized by propylsilan and after that arginine. The synthesized Fe₃O₄@PS-Arginine magnetic nanoparticles were modified to obtain Fe₃O₄@PS-ArgHSO₄]. These nanoparticles were used as environmental friendly solidacid magnetic nanocatalyst for the synthesis of 2-amino-4-arylbenzoh]quinoline-3-carbonitrile and 10,10-dimethyl-7-aryl-9,10,11,12-tetrahydrobenzoc]acridin-8(7H)-one derivatives via the one-pot reaction of α-naphthilamine and aromatic aldehydes with malononitrile or dimedone. Simple operation, high reaction yields, reusability of catalyst for several times, short reaction time and easy separation from reaction mixture are the key advantages of using this catalyst.