Title :

NMR Enantiodifferentiation of Quaternary Ammonium Salts of Troger Base

Author(s) :

Michon, Christophe [Auteur]
Université de Genève = University of Geneva [UNIGE]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Goncalves-Farbos, Maria-Héléna [Auteur]
Université de Genève = University of Geneva [UNIGE]
Lacour, Jérôme [Auteur]
Université de Genève = University of Geneva [UNIGE]

Journal title :

Chirality

Abbreviated title :

Chirality

Volume number :

21

Pages :

809-817

Publication date :

2009-01-22

ISSN :

0899-0042

English keyword(s) :

Pfeiffer effect
solvent effect
Troger base
NMR chiral solvating agent
quaternary ammonium ions
asymmetric ion pairing

HAL domain(s) :

Chimie

English abstract : [en]

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 ...
Show more >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.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Submission date :

2023-05-30T18:08:33Z
2024-04-26T09:15:10Z