Journal article
NMR enantiodifferentiation of quaternary ammonium salts of Tröger base.
- Michon C Department of Organic Chemistry, University of Geneva, CH-1211 Geneva 4, Switzerland.
- Gonçalves-Farbos MH
- Lacour J
- 2009-01-24
Published in:
- Chirality. - 2009
English
Hexacoordinated phosphorus BINPHAT anion 1 is an efficient NMR chiral solvating agent for quaternary ammonium cations (quats) derived from Tröger base leading to large separations of the proton signals of the enantiomers and even in polar solvent media such as CD(3)CN (Delta Delta delta up to 0.12 ppm). Quite surprisingly, this efficacy in the NMR split efficiency is not translated into a supramolecular stereocontrol (Pfeiffer effect) of the cation configuration by the anion.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1002/chir.20687
- PMID 19161219
- Persistent URL
- https://sonar.ch/global/documents/147402
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