OICC Press Iranian Journal of Catalysis 2345-4865 11 1 2024 01 19 Novel nanomagnetic material with dimethylamino tag: a selective and recyclable catalyst for the reaction of malononitrile, aryl aldehydes and dimedone EN Aysoda Ghobadpoor Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran Mohammad Mehdi Eskandari Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), PO Box 1485733111, Tehran, Iran. Abdolkarim Zare Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran 0000-0002-8210-3155 Mostafa Karami Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran Journal Article 2024 01 19 A novel nanomagnetic material with a dimethylamino tag namely nano-Fe3O4@SiO2@R-NMe2 ([NFSRN]) was produced, and characterized by EDS, FT-IR, VSM, FE-SEM, XRD and TGA analyses. Then, it was applied as a highly effective and magnetically recyclable catalyst for the one-pot multi-component reaction of malononitrile, arylaldehydes and dimedone. Interestingly, in most entries, among the possible products which can be produced from the reactants, only 2-amino-tetrahydrobenzo[b]pyrans were obtained in high yields and relatively short times, and no other product was obtained.