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

ChemInform Abstract: A New Chiral Shift Reagent for the Determination of Enantiomeric Excess and Absolute Configuration in Cyanohydrins.

ChemInform ◽  
2009 ◽  
Vol 40 (22) ◽  
Author(s):  
Lomary S. Moon ◽  
Ravinder S. Jolly ◽  
Yoganjaneyulu Kasetti ◽  
Prasad V. Bharatam
Keyword(s):  
Absolute Configuration ◽  
Enantiomeric Excess ◽  
Shift Reagent ◽  
Chiral Shift Reagent

ChemInform Abstract: A 1H NMR Method for the Determination of Enantiomeric Excess and Absolute Configuration of cis-Dihydrodiol Metabolites of Polycyclic Arenes and Heteroarenes.

ChemInform ◽  
2010 ◽  
Vol 23 (40) ◽  
pp. no-no
Author(s):  
D. R. BOYD ◽  
N. D. SHARMA ◽  
R. BOYLE ◽  
R. A. S. MCMORDIE ◽  
J. CHIMA ◽  
...  
Keyword(s):  
1H Nmr ◽  
Absolute Configuration ◽  
Enantiomeric Excess ◽  
Nmr Method

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

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