Fe3O4@SiO2@Methotrexate as efficient and nanomagnetic catalyst for the synthesis of 9-(aryl)thiazolo [4,5-d] [1,2,4]triazolo [1,5-a]pyrimidin-2(3H)-ones via a cooperative anomeric based oxidation: A joint experimental and computational mechanistic study

•Fe3O4@SiO2@Methotrexate MNPs as a recyclable catalyst was synthesized.•The preparation of pyrimidin-2(3H)-ones was studied.•A cooperative anomeric based oxidation was investigated in mechanistic pathway.•Computational mechanistic study was confirmed the reaction mechanism.