ESR studies on a friedel-crafts alkylation reaction in [bmim]Cl-AlCl3 ionic liquid

被引：4
|
作者：
Zhai, Cui-Ping
Song, Ai-Xin
Liu, Wei-Min
Wang, Han-Qing [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China
[2] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2006年 / 53卷 / 04期
关键词：
ESR; cation radical; ionic liquids; Friedel-Crafts alkylation;
D O I：
10.1002/jccs.200600118
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The paramagnetic complexes formed in Friedel-Crafts alkylation reaction systems are invistigated by electron spin resonance (ESR) spectroscopy, in room temperature ionic liquids system 1-butyl-3-methyl-limidazolium chloride-aluminium chloride ([bmim]Cl-AlCl3). The results indicate that ESR spectra observed are due to polycyclic aromatic radical cations formed from their parent hydrocarbons. ESR spectrum of spin adduct is obtained in an ionic liquid system composed of [bmim]Cl-AlCl3. In acidic solution the N-14 hyperfine coupling constant of 4-oxo-TEMPO, 2.15 mT, is appreciably larger due to an adduct formed with AlCl3.
引用
收藏
页码：887 / 890
页数：4
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