✦ LIBER ✦
The Photochemical Behavior of Endocyclic Oxa-enones with Substituents on the CC Double Bond. (Preliminary communication)
✍ Scribed by Paul Margaretha
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- German
- Weight
- 361 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Alkyl substituents on C~β~ of the CC double bond hinder both photodimerization of endocyclic oxa‐enones (1–4) and their photocycloaddition to olefins, and they cause a loss of regiospecificity in dimerization in unpolar solvents. The oxa‐enone 3 which like the bicyclic compounds 4 fails to dimerize at all, is shown to incorporate deuterium at the tertiary isopropyl carbon atom in CD~3~OD solution as a consequence of a bimolecularly initiated photoenolization.