Artículos de revistas
Substituent-induced H-1 chemical shifts of 3-substituted camphors
Registro en:
Magnetic Resonance In Chemistry. John Wiley & Sons Ltd, v. 35, n. 9, n. 609, n. 613, 1997.
0749-1581
WOS:A1997XU79600010
10.1002/(SICI)1097-458X(199709)35:9<609
Autor
Kaiser, CR
Rittner, R
Basso, EA
Institución
Resumen
The high-field H-1 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 alpha-proton is also observed, with less deshielding than those of substituted bornanes and norbornanes. (C) 1997 by John Wiley & Sons, Ltd. 35 9 609 613