Methylation of the enolates (3), and protonation of the enolates (4), are diastereoselective in conformity with a recently formulated rule, and are, with one exception, selective in the opposite sense to nucleophilic attack on the corresponding aldehydes (7) and ketones (8).
I. Fleming and J. J. Lewis, J. Chem. Soc., Chem. Commun., 1985, 149 DOI: 10.1039/C39850000149
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