Amino Functionalized Nano Fe3O4@SiO2 as a Magnetically Green Catalyst for the One-Pot Synthesis of Spirooxindoles Under Mild Conditions
Yazarlar (4)
Fatemeh Alemi-Tameh Islamic Azad University, Science And Research Branch, İran
Javad Safaei-Ghomi Islamic Azad University, Science And Research Branch, İran
Mohammad Mahmoudi-Hashemi Islamic Azad University, Science And Research Branch, İran
Prof. Dr. Majıd MONAJJEMI Islamic Azad University, Science And Research Branch, İran
Makale Türü Özgün Makale (ESCI dergilerinde yayınlanan tam makale)
Dergi Adı Polycyclic Aromatic Compounds
Dergi ISSN 1040-6638 Wos Dergi Scopus Dergi
Makale Dili İngilizce Basım Tarihi 01-2018
Cilt / Sayı / Sayfa 38 / 3 / 199–212 DOI 10.1080/10406638.2016.1179650
Makale Linki http://www.scopus.com/inward/record.url?eid=2-s2.0-85004024913&partnerID=MN8TOARS
Özet
(3-Aminopropyl)-triethoxysilane attached to Fe3O4@SiO2 nanoparticles has been characterized by powder X-ray diffraction, vibrating sample magnetometer, scanning electronic microscope, transmission electron microscope, energy dispersive X-ray, thermal gravimetric analysis, and Fourier transform infrared spectroscopy. The prepared nanoparticles employed as a heterogeneous catalyst in the synthesis of spirooxindoles derivatives in one-pot four-component reactions of isatin, methyl cyanoacetate or malononitrile, hydrazine hydrate, and ethyl acetoacetate. Amino-functionalized magnetic nanoparticles showed high catalytic activity in mild reaction conditions and excellent yields of products in short reaction times. Also, this nanocatalyst can be easily recovered by a magnet and reused for subsequent reactions for at least 5 times without noticeable loss in catalytic activity.
Anahtar Kelimeler
Core–shell | Fe3O4@SiO2–NH2 | multicomponent reactions | one-pot synthesis | spirooxindoles