19305-95-4Relevant articles and documents
STERIC REPULSION AND INTRAMOLECULAR INTERACTION OF SUBSTITUENTS IN 4-SUBSTITUTED ADAMANTAN-2,6-DIONES
Duddeck, Helmut
, p. 1365 - 1370 (2007/10/02)
By (13)C NMR measurements in presence of Yb(dpm)3 all (13)C signals of the title compounds 2-6 were assigned.Ratios of "bounds shifts" (Ri/j) can be correlated with Voegtle's n-values and reflect the spatial requirement of the substituent, unless the substituent participates significantly in complexation with Yb(dpm)3.Effects of intramolecular substituent interactions of different types within one molecule are additive, i.e. the individual interactions mechanisms are acting more or less independently.