## Abstract Benzocyclobutene **10** and 3‐oxabicyclo [3.2.0]hepta‐1, 4‐diene **11** are formed by gas‐phase pyrolysis of the title compound **9**. The results are discussed with reference to the estimated reaction parameters. It is found that the activation due to oxygen in **9** is relatively weak
Tétraméthylidène-2, 3, 5, 6-oxa-7-bicyclo[2.2.1]heptane. (Communication préliminaire)
✍ Scribed by Pierre Vogel; André Florey
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- German
- Weight
- 265 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Preparation of the title compound (4) is described. An important transannular effect between the two unconjugated s‐cis‐butadiene chromophores is observed by comparison of the UV. spectra of the dimethylidene‐oxanorbornane 3 and the tetramethylidene‐oxanor‐bornane 4.
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