NMR spectra and configuration of phenylallyl and related anions

A number of phenyl-substituted allyl anions and corresponding isoelectronic oxaallyl anions have been obtained by reacting phenyl-substituted propenes, phenylacetaldehyde and benzyl methyl ketone with potassium amide in liquid ammonia. The NMR spectra of the anions are decribed. They yield information on the distribution of the negative charge and on the configurations. The configurational stability is also discussed