Nuclear magnetic resonance properties of tellurium dichloride derivatives of methyl telluralaurate isomers
β Scribed by Marcel S.F. Lie Ken Jie; Sherman H. Chau
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 210 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0009-3084
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β¦ Synopsis
Reaction of methyl 2-to 6-telluralaurate with sulfuryl chloride gives the corresponding tellurium dichloride (TeC12) derivatives quantitatively. The TeC12 group induces a strong de-shielding effect on the adjacent methylene groups. The 2-, 3-and 4-positional isomers are identified by ~H-NMR spectroscopic analysis, and ~3C-NMR spectroscopic analysis allows all five positional isomers to be characterized.
π SIMILAR VOLUMES
A simple procedure is provided for the quantitative analysis of Diels-Alder adduct prepared from commercial methylcyclopentadiene and maleic anhydride by N M R spectra without further separation of its components. The adduct is considered as a mixture of endo norbornene derivatives (C,), (Dn), (E) a
## Abstract Peracetyl derivatives of oligoβ and polysaccharides showed their own characteristic acetateβmethyl signals in the NMR spectra measured in chloroformβ__d__, which are useful for the identification and conformational analysis of oligoβ and polysaccharides in solutions. An acetateβmethyl s