Quinine Based Ionic Liquids: A Tonic for Base Instability

Peter McNeice, Federico Maria Ferrero Vallana, Simon Coles, Peter Horton, Patricia Marr, Kenneth Seddon, Andrew Marr

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Abstract

Six basic ionic liquids were synthesised from the natural molecule quinine, including one room temperature ionic liquid. The thermal properties were studied and the basicity analysed by Hammett measurements. The properties are discussed in relation to the crystal structure of one of the salts, [C4Qn][NTf2] (2c) and electron density models generated using Spartan. The ionic liquids were shown to catalyse the Knoevenagel condensation of Malononitrile and Benzaldehyde.
Original languageEnglish
Article number111773
JournalJournal of Molecular Liquids
Volume297
Early online date14 Oct 2019
Publication statusPublished - 01 Jan 2020

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McNeice, P., Ferrero Vallana, F. M., Coles, S., Horton, P., Marr, P., Seddon, K., & Marr, A. (2020). Quinine Based Ionic Liquids: A Tonic for Base Instability. Journal of Molecular Liquids, 297, [111773].