Photochemistry of βγ-unsaturated carbonyl compounds. 3,3-Dimethyl-5,5-diphenylpent-4-en-2-one and 2,2-dimethyl-4,4-diphenylbut-3-enal
- 1 January 1973
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- p. 2496-2499
- https://doi.org/10.1039/p19730002496
Abstract
Irradiation of 3,3-dimethyl-5,5-diphenylpent-4-en-2-one (1) resulted in formation of 5-methyl-3,3-diphenylhex-4-en-2-one (3), an allylic rearrangement product arising from the singlet excited state. The product 2,2-dimethyl-3,3-diphenylcyclopropyl methyl ketone (8), was absent from both direct and acetophenone-sensitised irradiations. Irradiation of 2,2-dimethyl-4,4-diphenylbut-3-enal (2) resulted in decarbonylation.Keywords
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