Journal of Organic Chemistry p. 2688 - 2694 (1991)
Update date:2022-08-04
Topics:
Williams, Matthew A.
Hsiao, Chi-Nung
Miller, Marvin J.
The synthesis and direct conversion of N-alkoxy β-lactams to the carbapenam ring system is described.This novel cyclization apparently proceeds by initial carbene-mediated ylide formation with concomitant rearrangement.The title reaction is applied to the construction of the methyl ester of the bicyclic β-lactam precursor of PS-5.
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