Concepedia

(3 + 3) Annulation of acetoxy allenoates with enolisable carbonyl substrates leading to fused pyrans

Shubham Debnath, Sachin Chauhan, K. C. Kumara Swamy

Organic & Biomolecular Chemistry · 2023 · 11 citations · 59 references

DOI

Concepts

Abstract

Lewis base-controlled (3 + 3) annulation of δ-acetoxy allenoates with N -Boc-oxindole, benzofuranone, or pyrazolone affords fused pyrans; the base DBU gives pyrans, while DMAP affords dihydropyrans.

References

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