The 13C N M R spectra of nineteen bromo derivatives of 5ru-cholestan-3-one, cholest4-en-3-one and cholest-5-en-3one have been recorded. The substituent effects are analysed and examined with respect to additivity. The more interesting ys,,, and ylmti effects are considered in detail. KEY WORDS 13C
A novel chemical synthesis and carbon-13 nuclear magnetic resonance spectral properties of cholest-4-ene-3,6-dione
✍ Scribed by Edward J. Parish; Stephen A. Kizito; Jian Peng; Robert W. Heidepriem; Peter Livant
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 331 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0009-3084
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✦ Synopsis
This paper pre,;ents a novel method for the chemical synthesis of cholest-4-ene-3,6-dione, which is a naturally occurring steroid and a potential intermediate in steroid chemistry. Pyridinium chlorochromate (PCC) in refluxing benzene has been found to be an effective and convenient reagent for the oxidation and concomitant isomerization of cholest-AS-en-3B-ol 3-tetrahydropyranyl ether (cholesterol tetrahydropyranyl ether) to cholest-4-ene-3,6-dione in high yield. Also described are the carbon-13 nuclear magnetic resonance spectral properties of cholest-4-ene-3,6-dione.
📜 SIMILAR VOLUMES
## Abstract The results of a ^13^C NMR spectral investigation involving 5,6‐dihydro‐1,4‐oxathiins, 1,4‐tetrahydro[9,10]benzoxathiin, __trans__‐tetrahydro‐1,4‐benzoxathiin, and the corresponding sulfoxides and sulfones are reported. An interpretation involving a dipolar structure with (2__p__→2__p__