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Determining Enantiomeric Excess by Direct NMR Methods and by Indirect Methods

✍ Scribed by Robert Rothchild

Book ID
106241179
Publisher
Springer
Year
1996
Weight
47 KB
Volume
1
Category
Article
ISSN
1430-4171

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Oxazolidine derivatives of p-amino alcohols such as ephedrine have been resolved by -C NMR spedroscopy using Eu(hfc), as a chiral shift reagent. The method is quantitative in the determination of enantiomeric excess, and is advantageous where 'H NMR is of limited use owing, for example, to signitica