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Phase-transfer-catalyzed preparation of spiro[2,4]-4,6-heptadienes by cycloalkylation of 1,3-cyclopentadiene with 1,2-dibromoalkanes

✍ Scribed by A. I. D'yachenko; L. G. Menchikov; O. M. Nefedov


Book ID
112446447
Publisher
Springer
Year
1984
Tongue
English
Weight
180 KB
Volume
33
Category
Article
ISSN
1573-9171

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Lewis Acid-Catalyzed [3+4] Annulation of
✍ Olga A. Ivanova; Ekaterina M. Budynina; Alexey O. Chagarovskiy; Alexey E. Kaplun 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 348 KB 👁 2 views

## Abstract A novel Lewis acid‐catalyzed [3+4] annulation of 2‐(heteroaryl)cyclopropane‐1,1‐dicarboxylates with cyclopentadiene is reported. This reaction proceeds __via__ an electrophilic attack of the Lewis acid‐activated donor‐acceptor cyclopropane onto cyclopentadiene followed by Friedel–Crafts