2-dehydroacetaldehyde cation, O=CHCH2+
O=CHCH2+ can result from
from bond dissociation of a corresponding aldehyde radical cation:
R-CH2-CH2-CH=O+•
-> R-CH2• + +CH2CH=O
or hydride abstraction from acetaldehyde, CH3CH=O,
or from hydride abstraction from ethylene oxide:
H2C/O\CH2.
O=CHCH2+ rearranges to give:
cyclic C2H3O+ cation
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