Dionne, P.; St-Jacques, M., Canadian Journal of Chemistry, 1989, vol. 67, p. 11 - 20
作者:Dionne, P.、St-Jacques, M.
DOI:——
日期:——
The anormeric effect in seven-membered rings: a comformational study of 1-oxa and 3-oxa derivatives of benzocycloheptene by nmr
作者:S. Désilets、M. St-Jacques
DOI:10.1016/s0040-4020(01)86071-3
日期:1988.1
strong -anomeric effect while for , the Ca:Ce population (5:95) is opposite. Based on UV π→π* spectral characteristics, it is deduced that delocalization of the n electrons of oxygen into the aromatic ring is not the major factor governing this behavior. A large departure from coplanarity for the n-o* orbitals, revealed by the :-O-C-OMe torsional angle calculated for , explains the weakening of the -anomeric