The anisotropic effect of 4-substituents on the1H NMR chemical shift of H-5 in phenanthrenes
作者:R. M. Letcher
DOI:10.1002/mrc.1270160311
日期:1981.7
AbstractChloro‐, methoxy‐ and methyl‐substituents in the 4‐position of phenanthrenes exert a profound and diagnostic influence on the 1H chemicalshift of H‐5, and from 13C measurements it is considered to be dueto an anisotropic effect.