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Determination of the chiral purity of aminoalcohols by 1H NMR spectroscopy

✍ Scribed by Manfred Michalik; Christian Döbler


Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
266 KB
Volume
46
Category
Article
ISSN
0040-4020

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✦ Synopsis


2,2'-Dihydroxy-l,l '-binaphthyl derivatives were used as chiral shift reagents in the chiral recognition of carbocyclic aminoalcohols. The induced chemical shift differences are dependent on the ability of one or both of the OH groups of the shift reagent to coordinate with the substrate molecule for reasons of structure and stereochemistry.


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Chiral purity determination of tobacco a
✍ Alain Ravard; Peter A. Crooks 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 481 KB 👁 2 views

The enantiomeric purity of several tobacco alkaloids and nicotine-like compounds was determined using 'H NMR (300 MHz) spectroscopy in the presence of (-)-(R)l,l'-binaphthyl-2,2'-diylphosphoric acid (BNPPA) as a chiral complexing agent. The most significant signal splitting resulting from diastereoi