13C-NMR-spektroskopische und stereochemische untersuchungen—XII konformationen und 13C-verschiebungen monosubstituierter cyclododecane
HJ Schneider, F Thomas
Index: Schneider,H.J.; Thomas,F. Tetrahedron, 1976 , vol. 32, p. 2005 - 2011
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Citation Number: 8
Abstract
The halides, the methyl, the methoxy and the trimethylsilyloxy cyclododecanes are prepared and their conformations analyzed by low temperature 13CMR spectroscopy. In all cases two conformers are observed and characterized by ground state energy differences (ΔG0= 200– 400 cal/mole) which are assigned to D4 conformations bearing substituents either in corner (isoclinal) or noncorner (exo) positions. It is shown how the stereospecific substituent ...
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