Structure and Reactivity in the Radiolysis of Ketones
A series of six ketones was subjected to radiolysis at 25 deg with 3 Mev gamma rays. The compounds were: methyl npropyl, methyl n-butyl, methyl n-amyl, methyl cyclopropyl, dicyclopropyl, and methyl propenyl ketones. Detailed product analysis was carried out and G-values for the various prcducts are reported. With methyl n-propyl, methyl nbutyl, and methyl n-amyl ketones, degradation into radicals and an intramolecular formation of acetone and olefin are the main processes. Thus for methyl n-propyl ketone G(CO) = 0.38, G(CH₄) = 0.42, G(C₃H₈)= 0.36, G(C₂H₄) =0.15, and G(acetone) = 0.13. Methyl n-propyl ketone also gives rise to appreciable amounts of acetaldehyde (G = 0.12) and propylene (G = 0.09). With the cyclopropyl an unsaturated compound photorearrangement to an isomer is the main process, and there is little gaseous product. Dicyclopropyl ketone is particularly stable toward radiolysis. SIGMA G(gaseous product) = 0.36 compared to 1.88 for methyl n-propyl ketone. (auth)
- Research Organization:
- Univ. of California, Riverside
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-027661
- OSTI ID:
- 4839034
- Journal Information:
- Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 14 Vol. 83; ISSN 0002-7863
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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