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Chalcone dihalides—VIII: Synthesis and cyclization of the stereoisomers of 2′,6′-disubstituted α-bromochalcones

✍ Scribed by J.A. Donnelly; H.J. Doran


Publisher
Elsevier Science
Year
1975
Tongue
French
Weight
381 KB
Volume
31
Category
Article
ISSN
0040-4020

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Diastereoselective construction of cis 2
✍ Teck-Peng Loh; Jian-Ying Yang; Li-Chun Feng; Yan Zhou 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 129 KB

Diastereoselective construction of 2,6-disubstituted tetrahydropyrans with an exocyclic double bond was achieved via the In(OTf) 3 -catalyzed intramolecular 2,5-oxonium-ene cyclization. Its application was further demonstrated by the synthesis of a common intermediate for both zampanolide and dactyl