✦ LIBER ✦

Photochemische Reaktionen. 74. Mitteilung. Notiz zur Photoreaktivität ausgewählter ungesättigter Ketoalkohole der Jononreihe

✍ Scribed by Beat R. von Wartburg; Hans R. Wolf; Oskar Jeger

Publisher: John Wiley and Sons
Year: 1973
Tongue: German
Weight: 309 KB
Volume: 56
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19730560616

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

UV.‐irradiation (λ = 254 nm) of the hydroxy‐enones 3 and 6 in acetonitrile results in the cyclization to the unstable isomeric allylic alcohols 4 and 7, which dehydrate easily to the isolated unsaturated ether 5 and 8. The racemic γ,δ‐dihydroxy‐enone 9 upon irradiation under the same conditions gives rise to the exclusive formation of the furane‐compound 11.

📜 SIMILAR VOLUMES

Photochemische Reaktionen. 112. Mitteilu

Photochemische Reaktionen. 112. Mitteilung [1] Zur Photochemie α, β-ungesättigter γ, δ-Epoxyester. III. Ergänzende Untersuchungen zur Triplettreaktivität

✍ Kazuo Murato; Bruno Frei; Wolfhard Bernd Schweizer; Hans Richard Wolf; Oskar Jeg 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 German ⚖ 650 KB

## Abstract On triplet sensitization (__E__)‐**5** gives (__Z__)‐**5** and isomerizes __via__ C(δ), O‐bond cleavage to the cyclobutanone **6** and the conjugated γ‐ketoester **7**. ‐ On singulet excitation **6** undergoes decarbonylation and yields the bicyclo [4.1.0]heptane **8**. However, on trip