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Article Dans Une Revue Chirality Année : 2009

NMR Enantiodifferentiation of Quaternary Ammonium Salts of Troger Base

Résumé

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 CD3CN (ΔΔδ 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.

Dates et versions

hal-04560321 , version 1 (26-04-2024)

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Christophe Michon, Maria-Héléna Goncalves-Farbos, Jérôme Lacour. NMR Enantiodifferentiation of Quaternary Ammonium Salts of Troger Base. Chirality, 2009, Chirality, 21, pp.809-817. ⟨10.1002/chir.20687⟩. ⟨hal-04560321⟩
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