Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 208, Issue -, Pages 314-321Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2015.04.058
Keywords
Ionic liquid; Glycerol; 3-methylimidazolium; 2-azidoalcohol; Pyridine
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2014R1A2A2A01004352]
- Ministry of Education, Republic of Korea [2009-0093816]
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Imidazolium based tri-cationic room temperature ionic liquid (RTILs) were synthesized and characterized, and their physicochemical properties such as thermal stability, viscosities and solubility were investigated. These ionic liquids exhibited excellent catalytic activity for 2-azidoalcohol synthesis from epoxide and sodium azide. The present tri-cationic RTILs/water catalytic systems showed better catalytic performance than their mono-cationic counterparts. Among all prepared ionic liquids, [GLY(mim)(3)][OMs] gave best results with up to 96% yield of 2-azidoalcohol. The reusability test of glycerol-tri (3-methylimidazolium) trimesylate [GLY(mim)(3)][OMs](3) were studied for five consecutive cycles presenting the highest yield without loss in their catalytic activity. Hence, the experimental results demonstrated that structural variation of synthesized tri-cationic RTILs can dictate their physicochemical and catalytic activities. (C) 2015 Elsevier B.V. All rights reserved.
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