Intramolecular ester enolate-imine cyclization reactions for the asymmetric synthesis of polycyclic beta-lactams and cyclic beta-amino acid derivatives

Caroline D Evans, M Mahon, Philip Andrews, James Muir, Steven Bull

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Enolates of chiral N-(alpha-methyl-p-methoxybenzyl)-omega-imino-esters undergo intramolecular cyclization reactions to afford (syn)-aza-anions of beta-amino esters in high dr that cyclize to afford N-(alpha-methyl-p-methoxybenzyl)-beta-lactams that can be readily deprotected to afford their corresponding cyclic NH-beta-lactams, beta-amino esters, or beta-amino acids.
Original languageEnglish
Pages (from-to)6276 - 6279
Number of pages4
JournalOrganic Letters
Issue number23
Publication statusPublished - 2011

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