Answers are grounded in this paper and cite their sources.
The reaction of chiral N-arylnitrones with carbocyclic alkylarylketenes generates spirocyclic oxindoles in good yields and with excellent levels of enantioselectivity (90-99% ee) via a pericyclic cascade process.
No takes yet. Share an insight, caveat, or question.
Richmond et al. (2012) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: