✦ LIBER ✦
Photochemical Reactions. 126th Communication. Photochemistry of an α, β: δ, ε-unsaturated ketone: 4-(2′, 7′, 7′-Trimethylbicyclo [3.2.0]hept-2′-en-1′-yl)-3-buten-2-one
✍ Scribed by Keitaro Ishii; Terry A. Lyle; W. Bernd Schweizer; Bruno Frei
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- German
- Weight
- 280 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
On ^1^n,π*‐excitation, the title compound 2 undergoes a photoinduced intramolecular [4 + 2]‐cycloaddition affording the tetracyclic enol ether 3 as the only product in 79% yield. The assigned structure of 3 was confirmed by its conversion to the p‐nitrobenzoate 6 whose structure was determined by X‐ray analysis.