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Citation: DUAN Xue-Lei, CHENG Guang-Bin, QI Xiu-Fang, LV Chun-Xu. Regioselective Nitration of Toluene in Ionic Liquid-NO₂/air Systems[J]. Chinese Journal of Applied Chemistry, ;2009, 26(2): 173-177. shu

Regioselective Nitration of Toluene in Ionic Liquid-NO₂/air Systems

1.
College of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: CHENG Guang-Bin,
Received Date: 10 January 2008
Available Online: 10 April 2008

The nitration of toluene in NO₂/air catalyzed by ionic liquid was investigated.The reactions were carried out first at-10~0 ℃ and then at 25 ℃ for 20 h in the presence of slight excess of NO₂(mole ratio of toluene to NO₂ was about 1:1.4),and moderate yield and good selectivity were gained.The best result was obtained in the presence of [SO₃H(CH₂)₄Py]HSO₄,the mole ratio of which to toluene was 0.15,and the yield of mono-nitrotoluene was 77% with ortho/para=1.27.The ILs could be reused for four times with good catalytic activity and para-selectivity.
- ionic liquid,
- NO₂/air,
- nitration,
- catalyze,
- toluene
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Regioselective Nitration of Toluene in Ionic Liquid-NO₂/air Systems