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《Journal of Southwest University for Nationalities(Natural Science Edition)》 2008-02
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Synthesis of aethylparabenum catalyzed by task-specific acidic ionic liquid

TAN Feng,HU Rong,YANG Xue-jun,LI Jun-yang(School of Chemistry and Environmental Protection Engineering,Southwest University for Nationalities,Chengdu 610041,P.R.C.)  
ρ-hydroxybenzcic acid and dehydrated alcohol are used to synthesize aethylparabenum with novel Brфnsted activated [Hmim] HSO4 as the catalyst.The influences of the reaction period,the mole ratio between alcohol and acid,and the amount of ionic fluid on the ester yield were investigated.The optimized reaction condition is confirmed,according to which the reaction period should be 2.5h,the mole ratio between alcohol and acid should be 1:1.5,and the amount of ionic fluid should be 3ml.Under this optimized condition,the ester yield could achieve 81.5%,and the ionic fluid could be used for 5 times repeatedly without any change of its catalytic efficiency.
【CateGory Index】: TQ225.24
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