Novel nanomagnetic material with dimethylamino tag: a selective and recyclable catalyst for the reaction of malononitrile, aryl aldehydes and dimedone

Authors

• Aysoda Ghobadpoor ¹
• Mohammad Mehdi Eskandari * ²
• Abdolkarim Zare * ¹
• Mostafa Karami ³

1. Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran
2. Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), PO Box 1485733111, Tehran, Iran.
3. Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran

Abstract

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.

Keywords

• Multi-component reaction
• Nanomaterial synthesis
• Nanomagnetic catalyst
• Nano-Fe3O4@SiO2@R-NMe2 ([NFSRN])
• 2-Amino-tetrahydrobenzo[b]pyran