Abstract
Fragmentation of a phenyl methyl ether
under electron impact normally occurs by fission of either C-O bond to give
ions due to loss from the parent of a methyl radical or, with rearrangement of
one hydrogen, a formaldehyde molecule. In the latter case a hydrogen atom may
be subsequently lost if a stable tropylium ion may thereby result. If there are
present ortho- or para-substituents which are capable of forming a quinonoid
structure involving the ether oxygen after removal of a methyl radical, then loss
of formaldehyde does not occur.
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