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Vol. 25 No. 3 (2013): Vol 25 Issue 3

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Lewis Acid Ionic Liquid Immobilized on Chitosan for Synthesis of Dichlorophenylphosphine

https://doi.org/10.14233/ajchem.2013.13759
Xian-Hua Qiu
Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063, P.R. China
Yu Xie
Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063, P.R. China ; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, P.R. China
Xiao-Ying Wang
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, P.R. China
Qian-Yong Cao
Department of Chemistry, Nanchang University, Nanchang 330031, P.R. China
Xing-Hua Tang
Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063, P.R. China
Jin-Gang Hu
Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063, P.R. China
Xiao-Wei Hong
Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063, P.R. China
Si-Feng Yan
Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063, P.R. China

Corresponding Author(s) : Yu Xie

xieyu_121@163.com

Asian Journal of Chemistry, Vol. 25 No. 3 (2013): Vol 25 Issue 3

Abstract

Lewis acid ionic liquid immobilized on chitosan as a new catalyst was prepared via the synthesis of l-trimethoxy-silylpropyl-3-methylindazoliumchloride-AlCl3, l-trimethoxy-silylpropyl-3-methylindazolium-chloride-InCl3 and l-trimethoxy-silylpropyl-3-methylindazolium-chloride-FeCl3 and then grafting them to chitosan respectively. Their catalytic activities were investigated in the synthesis of dichlorophenylphosphine. The results showed when the three catalysts' amounts were 0.0225, 0.0195 and 0.015 g respectively, the substrate of benzene could be completely transformed into dichlorophenylphosphine on the conditions of the phosphorus trichloride 0.22 g, the molar ratio of phosphorus trichloride to benzene 1.8 : l, the reaction temperature 75 ºC and the reaction time 120 min. Moreover, the molar ratios of ionic liquid moiety to benzene were merely 0.285, 0.187 and 0.172 % respectively, which were much lower than that of the corresponding pure ionic liquids to benzene. The catalyst can be reused for many times with fine catalytic efficiency. In addition, the new catalyst using chitosan with the higher deacetylation degree as carrier could improve catalytic activity and reusability.

Keywords

Chitosan Lewis acid ionic liquids Dichlorophenylphosphine Immobilization Catalyst
Qiu, X.-H., Xie, Y., Wang, X.-Y., Cao, Q.-Y., Tang, X.-H., Hu, J.-G., … Yan, S.-F. (2012). Lewis Acid Ionic Liquid Immobilized on Chitosan for Synthesis of Dichlorophenylphosphine. Asian Journal of Chemistry, 25(3), 1673–1678. https://doi.org/10.14233/ajchem.2013.13759
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