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|Type:||Artigo de periódico|
|Title:||Substituent-induced 1h Chemical Shifts Of 3-substituted Camphors|
|Abstract:||The high-field 1H NMR analysis of 3-substituted camphors with OH, OMe, SMe, NHMe, NMe2 and Me substituents at endo and exo positions, and also with an oxo substituent, is reported. The substituent-induced chemical shifts (SCS) obtained for these difunctional systems, including those from previous work on 3-halocamphors, were examined in view of multilinear correlations with steric and electronic parameters. The resultant data show a strong contribution from the electric field mechanism, principally for the protons closer to the substituent. Carbonyl group interference on the expected SCS for the α-proton is also observed, with less deshielding than those of substituted bornanes and norbornanes. © 1997 by John Wiley & Sons, Ltd.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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