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Citation: Xu Cong, Zhou Dapeng, Liu Dan, Wu Jianyi. Preparation of p-Toluene Sulfonyl Chloride Using Ionic Liquid as Co-solvent[J]. Chemistry, ;2016, 79(9): 860-863. shu

Preparation of p-Toluene Sulfonyl Chloride Using Ionic Liquid as Co-solvent

Xu Cong ¹ ,
Zhou Dapeng ² ,
Liu Dan ^2,, ,
Wu Jianyi ^1,2,,

1.
1. Department of Petrochemical Engineering, Changzhou University, Changzhou 213164;
2.
2. Department of Biology and Chemical Engineering, Jiaxing University, Jiaxing 314001

Corresponding author: Liu Dan, Wu Jianyi,
Received Date: 8 January 2016
Available Online: 20 April 2016
Fund Project:

Four kinds of different ionic liquids were investigated as novel co-solvents for synthesis of p-toluene sulfonyl chloride (TsCl) with p-toluene sulfonyl acid (TsOH) and chlorosulfonic acid (ClSO₃H) as feedstocks in ethylidene chloride. The effect of ionic liquids on solubility ratio (s value) of TsOH in ethylidene chloride and sulphuric acid, as well as the yield of TsCl was studied particularly. The results showed that the s value of TsOH was significantly enhanced with increasing of ionic liquid amount. The yield of TsCl thus was also increased, correspondingly. Among four screened ionic liquids,[BuPy]BF₄ was proved to be the best co-solvent. The s value of TsOH and the yield of TsCl at optimal[BuPy]BF₄ content (2 (wt)%) were 12.5 and 87.36%, respectively. The influence of the molar ratio of feedstocks, reaction temperature and reaction time on the yield of TsCl were also investigated. The optimum reaction conditions that determined by orthogonal experiment were as follows:n(ClSO₃H):n(TsOH)=1.5:1, reaction temperature is 25℃, reaction time is 2h.
- Ionic liquids,
- p-Toluene sulfonyl chloride,
- Sulfonyl chloride reaction,
- Solubility ratio
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