Abstract
Cinnamaldehyde is a compound found in the skin of cinnamon plants which has various bioactivity. In this study, the compound cinnamaldehyde was modified with the help of Fe 3 O 4 which was synthesized with the help of seaweed extract as a heterogeneous catalyst. Fe 3 O 4 -MNPs are synthesized using FeCl 3 and Sargassum filipendula extracts as their natural reducing agents. The catalytic ability of Fe 3 O 4 was evaluated in the reaction between cinnamaldehyde and aromatic ketone compounds synthesized by the reflux method. Structure Analysis and elucidation of the synthesized compounds were carried out by measuring the vibrations of the functional groups by FTIR, and the determination of H and C atoms by HNMR and CNMR analysis. The FTIR, proton and carbon NMR analysis have identified that the synthesized product was cinnamylideneacetophenone by the name 1,5-diphenylpyenta-2,4-dien-1-one. The optimum conditions were obtained at a catalyst concentration of 10% w/w for five hours with a yield of 36%. The yield of this reaction was better than the reaction without a catalyst.
Highlights
The reduction in the use of chemicals in green chemistry is of concern to recent researchers
The magnetic properties of Fe3O4-MNPs make it easy to be separated from the mixture of solutions with the help of external magnets, so there is no need for special filtering devices to separate them
Some chemicals used in the synthesis of catalysts Fe3O4 and cinnamylideneacetophenone compound were FeCl3.6H2O, NaOH, aquademin, ethanol, n-hexane, ethyl acetate acetophenone, and cinnamaldehyde
Summary
The reduction in the use of chemicals in green chemistry is of concern to recent researchers. Various instrument modifications and the use of natural materials are often used as alternatives. Such as synthesis without the use of chemical solvents, the use of microwaveassisted methods or ultrasonic irradiation instruments, and often utilize natural polymers and plant extracts (Benelli, 2019; Fierascu et al, 2019; Khalaj et al, 2020; Mahmoud et al, 2015; Rajendaran et al, 2019; Sadjadi et al, 2017). The use of Fe3O4 magnetic nanoparticles was chosen as a catalyst in an organic reaction synthesized with the help of seaweed extract. The use of Fe3O4-MNPs as heterogeneous catalysts in a reaction is of concern because of its superiority. The magnetic properties of Fe3O4-MNPs make it easy to be separated from the mixture of solutions with the help of external magnets, so there is no need for special filtering devices to separate them
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