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Circular dichroism - lix on the apparent failure of the octant rule in the twistane - series

✍ Scribed by Günther Snatzke; Feliksa Werner-Zamojska

Publisher
Elsevier Science
Year
1972
Tongue
French
Weight
180 KB
Volume
13
Category
Article
ISSN
0040-4039

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✦ Synopsis

CHIROPTICAL Methods have been used to determine the absolute configuration of twistane by two groups of workers. 2'3Y4 Adachi et a1.,2 by application of the octant rule 5 to the positive Cotton effect of the intermediate ketone &J-L, predicted its absolute configuration to be enantiomeric with that shown below. They came to a similar conclusion in the case of the (+I-2twistanone u (positive CD), chemically correlated with C-1-1, by using the

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✍ David A. Lightner; Tsung C. Chang; Joseph Horwitz 📂 Article 📅 1977 🏛 Elsevier Science 🌐 French ⚖ 118 KB

Application of the Octant Rulels3 to interpret n-s\* Cotton effects (CE's) of chiral ketones with deuterium perturbers4 has received very little experimental investigation aside from the recent work of Djerassi et al. 4 on chiral (3R)-deuteriocyclopentanone. The latter, despite its conformational mo