๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Determination of dextro- and levomethorphan mixtures using chiral lanthanide NMR shift reagents

โœ Scribed by Irving W. Wainer; Marc A. Tischler; Eric B. Sheinin


Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
264 KB
Volume
69
Category
Article
ISSN
0022-3549

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Chiral NMR Shift Reagents: Mixtures of L
โœ Thomas J. Wenzel; Amy C. Bean; Sarah L. Dunham ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 423 KB ๐Ÿ‘ 1 views

## Chiral carboxylic acids such as N-(R)-1-(1-naphthyl)ethylaminocarbonyl-L-tert-leucine, N-(R)-1-(1- naphthyl)ethylaminocarbonyl-L-valine and N-(3,5-dinitrobenzoyl)-L-leucine are solubilized in chloroform by the addition of triethylamine. The resulting ion pairs are useful chiral resolving agents

Lanthanideโ€“Crown Ether Mixtures as Chira
โœ Sarah E. Weinstein; Melissa S. Vining; Thomas J. Wenzel ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 309 KB

Two chiral crown ethers, 2,3 : 4,5-bis [ 1,2-(3-phenylnaphtho)-1,6,9,12,15,18-hexaoxacycloeicosa-2,4-diene and 1,2 : 5,6-di-O-isopropylidene-3,4-[ (tert-butylbenzenediyl)bis(oxyethoxy)ethyl-โ€ฐ-mannitol, were evaluated as organic-soluble chiral NMR resolving agents. The crown ethers are useful resolvi

Separation of intra- and extracellular l
โœ Silvio Aime; Mauro Botta; Valentina Mainero; Enzo Terreno ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 83 KB

## Abstract This work describes the use of [Prโ€DO3A] as a shift reagent for differentiating intraโ€ and extracellular Lโ€lactate resonance in ^1^Hโ€ and ^13^Cโ€NMR spectra. DO3A acts as heptadentate ligand towards lanthanide(III) ions, leaving two coordination vacancies for the coordination of the Lโ€la

Enantiomeric differentiation of acyclic
โœ Marie-Cรฉcile Blanc; Pascale Bradesi; Joseph Casanova ๐Ÿ“‚ Article ๐Ÿ“… 2005 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 93 KB

The 13C NMR behaviour of ten acyclic terpene alcohols was examined in the presence of a chiral lanthanide shift reagent (CLSR). For each alcohol, we measured the lanthanide-induced shift (LIS) on the signals of the carbons and the splitting of some signals, which allowed the enantiomeric differentia

1H NMR separation of epimeric mixtures b
โœ P. Bucci; G. Chidichimo; A. Liguori; G. Menniti; N. Uccella ๐Ÿ“‚ Article ๐Ÿ“… 1984 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 300 KB ๐Ÿ‘ 1 views

Epimeric mixtures of isoHazolidine derivatives were investigated by ' H NMR spectra obtained in the presence of lanthanide shift reagents. The NMR signals of all the components contained in a mixture of 2 , 3 -d i p n e n y l -S -c e ~y ~~~~e s were identified and the LISCA computer program enabled