Retracted Article: Experimental and theoretical studies of the nanostructured {Fe3O4@SiO2@(CH2)3Im}C(CN)3 catalyst for 2-amino-3-cyanopyridine preparation via an anomeric based oxidation

Abstract

2-Amino-4,6-diphenylnicotinonitriles were prepared by using Fe₃O₄@SiO₂@(CH₂)₃Im}C(CN)₃ as a nanostructured catalyst with an ionic liquid tag under solvent free and benign conditions. Experimental evidence and theoretical studies confirmed that the final step of the synthetic pathway proceeded via an anomeric based oxidation mechanism. A good range of aromatic aldehydes were condensed with acetophenone derivatives, malononitrile and ammonium acetate to afford their corresponding products in short reaction times and good to high yields.