- REARRANGEMENT AND METHYL LOSS FROM IONIZED PROPENE OXIDE AND METHYL VINYL ETHER.
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Molecular cations of propene oxide (a) and methyl vinyl ether (b), despite a large difference (35 kcal mol** minus **1) in their heats of formation, undergo two very similar metastable methyl loss dissociations; for both of these dissociations a and b exhibit the same kinetic energy release values and produce acetyl ions. Deuterium labeling shows that a ions undergo little direct methyl loss, but instead isomerize by ring opening and 1,4-H transfer to b. For long-lived ions of energies below the decomposition threshold, nearly complete hydrogen exchange occurs between the methyl and methylene groups.
- Turecek,McLafferty
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p. 2528 - 2531
(2007/10/02)
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