Preparation of Fe3O4/SiO2-guanidine organobase catalyst for 1,5-diphenylpenta-2,4-dien-1-one synthesis

International Symposium on Current Progress in Functional Materials

Cahyana, A.H.^1 ; Fitria, D.^1 ; Ardiansah, B.^1 ; Rahayu, D.U.C.^1

Department of Chemistry, Faculty of Mathematics, Natural Sciences Universitas Indonesia, Kampus UI Depok, Depok

16424, Indonesia^1

关键词: 1 ,5 diphenylpenta 2 ,4 dien 1 ones;    Coprecipitation method;    Energy dispersive X ray spectroscopy;    Fe3O4 nanoparticles;    Organic products;    Particle size analyzers;    Reaction conditions;    Structure elucidation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/188/1/012026/pdf
DOI  :  10.1088/1757-899X/188/1/012026

来源: IOP

【 摘 要 】

A novel heterogeneous organobase catalyst of Fe3O4/SiO2-guanidine was prepared in three stages. First, Fe3O4nanoparticle was obtained by co-precipitation method using seaweed Sargassum Sp. as natural reductant. Fe3O4was then coated by SiO2using TEOS as silica source, resulting Fe3O4/SiO2. Finally, Fe3O4/SiO2-Guanidine was obtained by modifying Fe3O4/SiO2with guanidine in the suitable reaction condition. This organobase catalyst was characterized by Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDS), and Particle Size Analyzer (PSA). The material was then used as a highly active catalyst in aldol condensation reaction between acetophenone and cinnamaldehyde to produce 1,5-diphenylpenta-2,4-dien-1-one. The structure elucidation of the organic product was confirmed by UV-Vis, FTIR, and LC-MS.