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Determination of enantiomeric purity of polar substrates with chiral lanthanide NMR shift reagents in polar solvents

✍ Scribed by Sweeting, Linda M.; Crans, Debbie C.; Whitesides, George M.

Book ID
120233877
Publisher
American Chemical Society
Year
1987
Tongue
English
Weight
502 KB
Volume
52
Category
Article
ISSN
0022-3263

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πŸ“œ SIMILAR VOLUMES

Chiral 1-deuterio alcohols. Synthesis an
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Primary 1-deuterlo alcohols, RCHDOH, which are chiral have great value in the study of mechanisms of chemical merically pure alcohols of this type have been obtained various chemical asymmetric reactions have been used to by virtue of deuterium substitution, and biochemical reactions. 2.3 Enantioinv

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Tris(3-heptafluorobutyryl-d-camphorato)europium(Ill), Eu(hfbc) 3 was used to determine the optical purities of enantiomeric mixtures of tri-, di-and monoglycerides with various fatty acid chain lengths by proton magnetic resonance (PMR). Synthesized model enantiomers were used to assign PMR signals.

Optical purity determination by NMR: Use
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of the following in a volume of 1 liter: naphthalene (150 g), 2,5-diphenyloxazole (8 g), 1,4-bis(4-methyl-5-phenyl-oxazol-2-yI)benzene (0.6 g), ethylene glycol (20 ml), 2-ethoxyethanol(lOO ml), and toluene to make 1 liter. The radioactivity was measured in the liquid scintillation counter with an 18