Tetrahedron

13C-NMR-spektroskopische und stereochemische untersuchungen—XII konformationen und 13C-verschiebungen monosubstituierter cyclododecane

HJ Schneider, F Thomas

文献索引：Schneider,H.J.; Thomas,F. Tetrahedron, 1976 , vol. 32, p. 2005 - 2011

全文：HTML全文

被引用次数: 8

摘要

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 ...