Answers are grounded in this paper and cite their sources.
Organocatalytic enantioselective cycloadditions providing nitrogen-substituted dihydropyran-2-ones were developed in two catalytic systems. The (3R,4R)-product was a versatile intermediate in the synthesis of 1beta-methylcarbapenem antibiotics.
No takes yet. Share an insight, caveat, or question.
Kobayashi et al. (2009) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: