Inter- and Intramolecular [2+2]-Photocycloaddition of Tetronates − Stereoselectivity, Mechanism, Scope and Synthetic Applications
✍ Scribed by Michael Kemmler; Eberhardt Herdtweck; Thorsten Bach
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 281 KB
- Volume
- 2004
- Category
- Article
- ISSN
- 1434-193X
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## Abstract Intramolecular [2+2] photocycloaddition of a dimeric vinylpyridine **1** through a singlet‐excited species efficiently formed the corresponding __syn__‐ and __anti__‐pyridinophanes **2** and **3**. The __syn__‐isomers were elucidated spectroscopically and by X‐ray crystallography as __e