Regioselectivity nitration of aromatics with N2O5 in PEG-based dicationic ionic liquid |
| |
| Authors: | Peng-Cheng WangMing Lu |
| |
| Institution: | School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China |
| |
| Abstract: | Regioselective mononitration of simple aromatic compounds has been investigated with N2O5 as nitrating agent and a new PEG200-based dicationic acidic ionic liquid (PEG200-DAIL) as catalyst. The results of experiments show that this nitration system can significantly improve the para-selectivity of alkyl-benzenes and the ortho-selectivity of halogenated-benzenes. The PEG200-DAIL exhibits recyclable temperature-dependant phase behavior in CCl4 solvent, and it can be recycled without apparent loss of catalytic activity, and only 5% loss of weight is observed after six times recycling. |
| |
| Keywords: | Aromatic nitration N2O5 PEG200-DAIL Regioselective Recyclable |
| 本文献已被 ScienceDirect 等数据库收录！ |
