- Interconversions of C5H10O+. ions with the oxygen on the first, second and third carbons: Approximately 60 communicating isomers
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The structures of the C4H7O+ and C3H6O+. dissociation products from selected C5H10O+. isomers with the oxygen on the first, second and third carbons were determined. The first product is CH3C(OH)CH=CH2+ and the second is CH3C(OH+)CH2. and CH3.CHCHOH+ in various proportions. These results demonstrate that ions with the oxygen on the first and third carbons isomerize partially to isomers with the oxygen on the second carbon. This and C5H10O+. isomers expected to be accessible to each other suggest that there are traversable pathways between about 60 C5H10O+. isomers, demonstrating how extensive interconversions of aliphatic radical cations can be.
- McAdoo,Hudson
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p. 492 - 496
(2007/10/02)
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- The Synthesis of 2,5-Dialkylcyclopentanones from Aliphatic Aldehydes and Formaldehyde
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Aliphatic aldehydes react with formaldehyde in the presence of dimethylamine hydrochloride at 200 deg C to form 2,5-dialkylcyclopentanones in moderate yields.Propanal, butanal, and pentanal give 2,5-dimethyl-, 2,5-diethyl-, and 2,5-dipropylcyclopentanone respectively, but ethanal gives only a tarry material.
- Watanabe, Yoshihisa,Sakamoto, Fukashi,Shim, Sang Chul,Mitsudo, Take-aki
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p. 3875 - 3876
(2007/10/02)
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