University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 29 4 2018 10 01 Expedient Catalytic Access to Geraniol Epoxide Using a New Vanadium Schiff Base Complex on Modified Magnetic Nanoparticles 311 319 67443 10.22059/jsciences.2018.67443 EN F. Farzaneh Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University P.O.Box 1993891176, Vanak, Tehran, Islamic Republic of Iran E. Rashtizadeh Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University P.O.Box 1993891176, Vanak, Tehran, Islamic Republic of Iran Journal Article 2017 11 22 <span>The Fe₃O₄@SiO₂@APTMS@Glu-His@V complex was prepared with modification of iron oxide magnetic nanoparticles with (3-aminopropyl) trimethoxysilane (APTMS) and glutaraldehyde-L-histidine Schiff base followed by complexation with VOSO₄. Characterization of the Fe₃O₄@SiO₂@APTMS@Glu-His@V complex was carried out by means of FTIR, XRD, SEM, EDX, TEM, AAS and VSM techniques. It was found that Fe₃O₄@SiO₂@APTMS@Glu-His@V complex successfully catalyze the epoxidation of allyl alcohols with tert-butylhydroperoxide (TBHP) in moderate to high yields. The epoxidation of geraniol with 100 % conversion and 100% selectivity within 15 min is remarkable. Short reaction time, high activity, selectivity, stability, reusability and easily magnetic separation of the catalyst with no leaching during the course of reactions are some advantages of this research.</span> https://jsciences.ut.ac.ir/article_67443_8015d4ca732e49411a83c42ccd101ab2.pdf