Application of a Shift Reagent in Nuclear Magnetic Resonance Spectroscopy. IV.A Simple Method for Stereochemical Assignment and Simultaneous Determination of cis-trans Isomeric Trisubstituted Allylic Alcohols

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Relative shift values against a shift of an acetoxyl signal, estimated by employing a nuclear magnetic resonance shift reagent Eu (DPM) ₃ on all acetylated sample, couldyield valuable information for assigning the stereochemistry of cis-trans trisubstituted allylic alcohols and facilitate a simultaneous determination of these isomers in a mixture.