Preparation of 3,6-dibenzoylacenapthene in the presence of Lewis acidic ionic liquids |
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| Authors: | Min Chen Lijing Huang Ying Luo Minqiang He Jimin Xie and Xinhua Yuan |
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| Affiliation: | (1) School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, People’s Republic of China;(2) School of Material Science and Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, People’s Republic of China |
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| Abstract: | The reactivity of Lewis acidic ionic liquids for the acylation of acenaphthene to 3,6-dibenzoylacenaphthene was investigated.
Ionic liquids of different alkyl chain length and metal chloride were synthesized and tested for the reaction to discuss the
effects of Lewis acidity of the ionic liquid on the alkylation. Pure 3,6-dibenzoylacenaphthene was obtained and the structure
of 3,6-dibenzoylacenaphthene was identified by GC/MS, FT-IR and 1H NMR spectra. Emim]C1/A1C13 ionic liquid was found to be the most active catalyst in the acylation. The yield of 3,6-dibenzoylacenaphthene was up to
89.6% and the selectivity towards 3,6-dibenzoylacenaphthene was up to 92.2%. The experiment shows that Emim]Cl/AlCl3 can be used as both catalyst and solvent, it is reusable and environmentally friendly for the preparation of 3,6-dibenzoylacenaphthene. |
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