Solvent-Induced Deuterium Isotope Effects in13C- and15N-NMR. Spectra of Enaminones
作者:Lech Kozerski、Wolfgang von Philipsborn
DOI:10.1002/hlca.19820650715
日期:1982.11.3
effect of deuterium on the 13C and 15N chemical shifts of enaminones has been investigated. D/H isotope shifts are reported for neutral and protonated species, i.e., when the isotope is exchanged on the C(2)-, N-, or O-atoms. In cases of slow exchange the isotope shifts were obtained from solutions containing both isotopomers, whereas for fast exchange (acidic solutions) either separate NMR. sample tubes