## Abstract A LIS analysis of 2‐isopropyl‐1,3‐dioxane (1) and 2‐methyl‐2‐phenyl‐1,3‐dioxane (2) is reported. The monodentate complexing model gives good agreement with the observed shifts in both compounds, whereas the bidentate model (lanthanum binding to both oxygens) does not give an acceptable
Conformational analysis by LIS. II. 2-and 3-alkyl substituted 1-indanones
✍ Scribed by Otmar Hofer
- Publisher
- Springer Vienna
- Year
- 1979
- Tongue
- English
- Weight
- 363 KB
- Volume
- 110
- Category
- Article
- ISSN
- 0026-9247
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## Abstract Convergent syntheses of the 9‐(3‐X‐2,3‐dideoxy‐2‐fluoro‐__β__‐D‐ribofuranosyl)adenines **5** (X=N~3~) and **7** (X=NH~2~), as well as of their respective __α__‐anomers **6** and **8**, are described, using methyl 2‐azido‐5‐__O__‐benzoyl‐2,3‐dideoxy‐2‐fluoro‐__β__‐D‐ribofuranoside (**4**
Substituents placed on the phenyl rings of 2,3-diphenyl-1,3-thiazolidin-4-one affect the electron density surrounding both the methine proton and the C(2) carbon. These changes are reflected in the differing chemical shifts for these atoms relative to the parent compound. The other carbons in the he