Intramolecular [2+2] photocycloaddition
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Michael C. Pirrung; Stephen A. Thomson
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Article
📅
1986
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Elsevier Science
🌐
French
⚖ 182 KB
Lewis acid catalyzed condensation of unsaturated orthofonnates with dienol ethers gives enone-acetals suitable for intramolecular photocycloadditions, yielding heterocyclic precursors to sesquiterpene lactones.