Efficient synthesis of 1, 3-dialkylimidazolium-based ionic liquids: the modified continuous radziszewski reaction in a microreactor setup

J Zimmermann, B Ondruschka…

Index: Zimmermann, Johannes; Ondruschka, Bernd; Stark, Annegret Organic Process Research and Development, 2010 , vol. 14, # 5 p. 1102 - 1109

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Citation Number: 25

Abstract

By making use of a modified Radziszewski reaction, it is demonstrated that water-soluble 1, 3-dialkylimidazolium-based ionic liquids can be produced in good yields (70− 90%) and purities (> 95%) starting from readily available, cost-effective monoalkylamines, glyoxal, formaldehyde, and mineral or organic acids. The homosubstituted 1, 3-dialkylimidazolium salts feature high thermal stabilities similar to those of their heterosubstituted counterparts, ...