Anomalous NMR Behavior of Meso Compounds with Remote Stereogenic Centers on Addition of Chiral Shift Reagent or Chiral Solvating Agent

2003 ◽  
Vol 125 (16) ◽  
pp. 4943-4950 ◽  
Author(s):  
Serap Beşli ◽  
Simon J. Coles ◽  
David B. Davies ◽  
Robert J. Eaton ◽  
Michael B. Hursthouse ◽  
...  
Keyword(s):  
Shift Reagent ◽  
Chiral Shift Reagent ◽  
Stereogenic Centers ◽  
Chiral Solvating Agent

ChemInform Abstract: Application of TRISPHAT Anion as NMR Chiral Shift Reagent.

ChemInform ◽  
2010 ◽  
Vol 29 (14) ◽  
pp. no-no
Author(s):  
J. LACOUR ◽  
C. GINGLINGER ◽  
F. FAVARGER ◽  
S. TORCHE-HALDIMANN
Keyword(s):  
Shift Reagent ◽  
Chiral Shift Reagent

A Chiral Pybox Ligand as a New Chiral Shift Reagent for Secondary Dialkylammonium Cations

2004 ◽  
Vol 33 (5) ◽  
pp. 582-583 ◽  
Author(s):  
Kazuki Sada ◽  
Yuichi Tateishi ◽  
Seiji Shinkai
Keyword(s):  
Shift Reagent ◽  
Chiral Shift Reagent

New rearrangement in the quinazoline series. Resolution of a racemate under the influence of a chiral shift reagent

1975 ◽  
Vol 11 (12) ◽  
pp. 1440-1441
Author(s):  
R. M. Acheson ◽  
P. J. Abbott ◽  
J. K. Stubbs ◽  
M. Yu. Kornilov
Keyword(s):  
Shift Reagent ◽  
Chiral Shift Reagent

scholarly journals Direct determination of enantiomeric enrichment of chiral, underivatized aminophosphonic acids — useful for enantioselective bioconversion results evaluation

2013 ◽  
Vol 11 (9) ◽  
pp. 1542-1547
Author(s):  
Kinga Kozyra ◽  
Magdalena Klimek-Ochab ◽  
Małgorzata Brzezińska-Rodak ◽  
Ewa Żymańczyk-Duda
Keyword(s):  
31P Nmr ◽  
Enantiomeric Excess ◽  
Direct Determination ◽  
Shift Reagent ◽  
Racemic Mixture ◽  
31P Nmr Spectroscopy ◽  
Phosphonic Acids ◽  
Aminophosphonic Acids ◽  
Chiral Solvating Agent

AbstractAbstract The possibility of applying 31P NMR spectroscopy for the determination of the enantiomeric excess of the racemic mixture of non-derivatized aminophosphonic acids with small side chains has been investigated. It is proven, that the effectiveness of the application of a chiral solvating agent strongly depends on the concentration of applied shift reagent and on the pH of the particular experiment. Effectual resolution protocols are elaborated for following phosphonic acids: 1-aminoethanephosphonic acid, 1-amino-2-methylpropanephosphonic acid, 1-aminophenylmethanephosphonic acid, 1-aminophenylmethane-phosphonic acid and 1-amino-2-phenylethanephosphonic acid. Graphical abstract

A new chiral shift reagent for the determination of enantiomeric excess and absolute configuration in cyanohydrins

2009 ◽  
pp. 1067 ◽  
Author(s):  
Lomary S. Moon ◽  
Ravinder S. Jolly ◽  
Yoganjaneyulu Kasetti ◽  
Prasad V. Bharatam
Keyword(s):  
Absolute Configuration ◽  
Enantiomeric Excess ◽  
Shift Reagent ◽  
Chiral Shift Reagent

New pincer-like receptor derived from trans-cyclopentane-1,2-diamine as a chiral shift reagent for carboxylic acids

2007 ◽  
Vol 18 (16) ◽  
pp. 1981-1985 ◽  
Author(s):  
Carmen Peña ◽  
Javier González-Sabín ◽  
Ignacio Alfonso ◽  
Francisca Rebolledo ◽  
Vicente Gotor
Keyword(s):  
Carboxylic Acids ◽  
Shift Reagent ◽  
Chiral Shift Reagent
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