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Free radical annulation of cyclopentane ring

✍ Scribed by Živorad Čeković; Radomir Saičić


Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
231 KB
Volume
27
Category
Article
ISSN
0040-4039

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Cyclopentane synthesis and annulation: I
✍ Veejendra K. Yadav; Alex G. Fallis 📂 Article 📅 1988 🏛 Elsevier Science 🌐 French ⚖ 232 KB

A general procedure for cyclopentane synthesis based on free-radical cyclization of thioacetals is described. This permits the rapid assembly, by intramolecular annulation, of various ring systems bearing useful functionality for use in total synthesis.

Iterative Cyclopentane Annulation of α,β
✍ Dipl.-Chem. Maria Dorsch; Prof. Dr. Volker Jäger; Dipl.-Chem. Wolfgang Spönlein 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 234 KB 👁 1 views

tation in 3 (AAG' > 6 kcal/mol). 8n-"Antiaromaticity" in the cycloheptatrienide ion, on the other hand, cannot be of much significance energetically, since the difference in barriers for 1 and 2 is only 3.5 kcal/mol. According to the Xray structure analysis, 1 . 2 T H F has a "pentadienide ion" stru