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Deuterium Isotope Effects on 13 C NMR Chemical Shifts Reflect the Smaller Steric Size of CD 3 Compared to CH 3 Groups §

✍ Scribed by Ibrom, Kerstin; Kohn (, Gunther; Boeckmann, Kai-Uwe; Kraft, Roswitha; Holba-Schulz, Petra; Ernst, Ludger

Book ID
126824811
Publisher
American Chemical Society
Year
2000
Tongue
English
Weight
46 KB
Volume
2
Category
Article
ISSN
1523-7060

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✍ M. A. Paz-Sandoval; F. Santiesteban; R. Contreras 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 332 KB

Carbon-13 N M R chemical shifts in various oxazolidinea derived from pseudoephedrine and their corresponding N-borane adducts and oxazolidinium salts are examined. The observed shifts can be rationalized on the basis of steric factors, owing to the simiIarity between the borane adducts and the oxazo