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ChemInform Abstract: Synthesis of Benzo[a]heptalenes via Benzanellation—Aromatization Sequence.

✍ Scribed by Ekaterina A. Ochertyanova; Hans-Juergen Hansen

Publisher
John Wiley and Sons
Year
2010
Weight
41 KB
Volume
33
Category
Article
ISSN
0931-7597

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Synthesis of Benzo[a]heptalenes via Benz
Synthesis of Benzo[a]heptalenes via Benzanellation–Aromatization Sequence
✍ Ekaterina A. Ochertyanova; Hans-Jürgen Hansen 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 German ⚖ 148 KB

A novel approach towards the synthesis of functionalized benzo[a]heptalenes 9 and 10 via a 6pelectrocyclic ring closure ± aromatization sequence of corresponding bis[prop-2-enoates] 5 and 6 has been developed (Scheme 1). The starting bis[prop-2-enoates] have been prepared from the corresponding dial