The photodimerization of 2,3-dihydro-2,6-dimethyl-4-pyrone
β Scribed by Peter Yates; Donald J. MacGregor
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 209 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
The photodimerization of a,R-unsaturated ketones to give cyclobutanes has long been known (l), but the structural details of such photodimers have been
π SIMILAR VOLUMES
Debromination of rl-aryl-or 4-alkenyl-3-bromo-4,6-dimethyl-3,4dihydro-2-pyrone (1) with AgSbF in dichloromethane or 1,2-dichloroethane induced rearrangement of the argl or alkenyl group to the 3-position to afford the corresponding 3-substituted 2-pyrone (5) in high yield.
In the title compound, C~12~H~12~O~3~, the heterocyclic ring adopts a half-chair conformation. CβH...O hydrogen bonds form a three-dimensional network.