Circular dichroism, XCV. Chiroptical properties of stereoisomeric conjugated oximes, I
✍ Scribed by Frelek, Jadwiga ;Huang, Liang ;Kerek, Francis ;Snatzke, Günther ;Szczepek, Wojciech J.
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 261 KB
- Volume
- 1991
- Category
- Article
- ISSN
- 0947-3440
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✦ Synopsis
Abstract
The CD of ketoximes of defined (E)/(Z configuration and some of their O‐derivatives of steroids (4‐en‐3‐ones, 4‐en‐6‐ones, 5‐en‐7‐ones, 4,6‐dien‐3‐ones) and monoterpenoids (verbenone, carvone) have been investigated. All show two Cotton effects around 250 nm (band II) and 230 nm (band III), which usually have opposite signs. For the first‐mentioned one a rule is proposed for the correlation between CD and absolute configuration. Most of the (Z)‐oxime derivatives give an additional Cotton effect around 290 nm (band I), whose sign is always opposite to that of band II.