(Ni۰.۷Zn۰.۳)Fe۲O۴/APTES-GO as An Eco-Friendly Catalyst for One-Pot Three Component Synthesis of ۲-Amino- ۴H-Chromene Derivatives

In this research GO was modified with ۳-aminopropyl triethoxysilane (APTES-GO), and then was mixed with prepared (Ni۰.۷Zn۰.۳) Fe۲O۴ to obtain (Ni۰.۷Zn۰.۳)Fe۲O۴/APTES-GO nanocomposite. The composite was characterized by FT-IR, XRD, SEM, and EDX. Results confirmed the modification of GO with APTES, and the presence of Ni, Zn, and face-centered cubic (FCC) structure of Fe۲O۴. Finally, composite was used as an eco-friendly catalyst in one-pot synthesis of ۲-amino-۴H-Chromene via three-component reaction of malononitrile, aromatic aldehydes, and resorcinol. The obtained catalyst was recovered by an external magnetic field and reused several times without significant activity loss. Resulting ۲-amino-۴H-chromenes were purified and then characterized by FT-IR, ۱۳C-NMR and ۱H-NMR spectrums

کلیدواژه ها:

۲-Amino-۴H-chromene ، Magnetic catalysts ، graphene oxide ، Heterogeneous catalyst ، ۳-aminopropyl triethoxysilane