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Z. Dąbrowski, A. Wiśniewska, A. Kulig-Adamiak, J. Kamiński, J. Cybulski

Ionic liquids as the catalysts for asymmetric reactions (in English)

Polimery 2012, No 5, 375


DOI: dx.doi.org/10.14314/polimery.2012.375

Summary

A new 7 functionalized chiral ionic liquids (CILs) based on pyrrolidine have been synthesized from (S)-proline as a main substrat. The obtained compounds have 1-[(S)-(pyrrolidin-2-yl)methyl]-3-alkylimidazolium cation and bis(trifluoromethylsulfonyl)imide and hexafluorophosphate anions. The structures of the obtained catalysts were determined by spectroscopic analysis 1H NMR, 13C NMR and 19F NMR. This chiral ionic liquids have been applied as efficient catalysts for Michael addition of cyclohexanone to nitroalkenes.


Key words: chiral ionic liquids, asymmetric synthesis, Michael addition, imidazole, pyrrolidine, enantioselectivity

e-mail: zbigniew.dabrowski@ichp.pl

Z. Dąbrowski, A. Wiśniewska, A. Kulig-Adamiak, J. Kamiński, J. Cybulski (107.7 KB)
Ionic liquids as the catalysts for asymmetric reactions (in English)