Triphenylphosphinioacetonide (2) undergoes selective metallation with n-butyl-lithium to afford the novel 1,3-dianion (3) as evidenced by deuteriation and condensations with electrophiles.
J. D. Taylor and J. F. Wolf, J. Chem. Soc., Chem. Commun., 1972, 876 DOI: 10.1039/C39720000876
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