Preparation of 5-methyl-3,5-dipropyl-2-pyrazoline catalyzed by chloroaluminate ionic liquids
文献类型：期刊论文
| 作者 | Chang, Jinyu3,4; Yao, Yuan1; Xia, Yangfeng2; Liu, Long3; Zhang, Yanqiang1,3 |
| 刊名 | Journal of Molecular Structure
 |
| 出版日期 | 2022-05-15 |
| 卷号 | 1256 |
| 关键词 | Ionic liquids - Aluminum compounds - Cyclization - Chlorine compounds - Catalysis - Quantum chemistry |
| ISSN号 | 222860 |
| DOI | 10.1016/j.molstruc.2022.132539 |
| 英文摘要 | 5-methyl-3,5-dipropyl-2-pyrazoline is an intermediate for the preparation of new high energy fuels. In this paper, chloroaluminate ionic liquids ([Bmim]Cl-xAlCl3, x = 1, 1.2, 1.4, 1.6, 1.8, 2.0) were applied as green catalysts for the synthesis of 5-methyl-3,5-dipropyl-2-pyrazoline through the intramolecular cyclization reaction of 2-pentyl ketazine. The effects of temperature, acidity and dosage of ionic liquids on the cyclization reaction were studied in detail and the highest catalytic performance was under the conditions as 110 掳C, [Bmim]Cl-1.6AlCl3 and 10% of 2-pentyl ketazine. With the theoretical simulations, the possible catalytic mechanism was proposed as the hydrogen-like interaction between Al ([Bmim]+AlCl4鈭? and N1 atoms, which increases the charge of N2 atoms, thereby improving its nucleophilicity and further making it undergo intramolecular addition reaction with methyl. This study will provide guidance for the green preparation of 5-methyl-3,5-dipropyl-2-pyrazoline. 漏 2022 |
| 学科主题 | Addition Reactions |
| 项目编号 | The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China ( 21878278 and 22178359 ). |
| 出版者 | Elsevier B.V. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61276]  |
| 作者单位 | 1.Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou; 450000, China 2.Beijing Institute of New Energy Technology, Beijing; 102300, China 3.Key Laboratory of Science and Technology on Particle Materials, Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100049, China 4.College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang; 110142, China |
| 推荐引用方式 GB/T 7714 | Chang, Jinyu,Yao, Yuan,Xia, Yangfeng,et al. Preparation of 5-methyl-3,5-dipropyl-2-pyrazoline catalyzed by chloroaluminate ionic liquids[J]. Journal of Molecular Structure,2022,1256. |
| APA | Chang, Jinyu,Yao, Yuan,Xia, Yangfeng,Liu, Long,&Zhang, Yanqiang.(2022).Preparation of 5-methyl-3,5-dipropyl-2-pyrazoline catalyzed by chloroaluminate ionic liquids.Journal of Molecular Structure,1256. |
| MLA | Chang, Jinyu,et al."Preparation of 5-methyl-3,5-dipropyl-2-pyrazoline catalyzed by chloroaluminate ionic liquids".Journal of Molecular Structure 1256(2022). |
入库方式： OAI收割
来源：过程工程研究所
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