Abstract
The mass spectra of
chalcone, of its 2-, 2'-, 3-, 3'- and 4-nitro derivatives, and of a number of
deuterated analogues, are described. Fragmentation of the 2-nitro isomer is
very simple on account of anchimeric assistance to a carbon-carbon bond fission
from the nitro group. The 2'-nitro isomer shows complex fragmentation resulting
from oxygen transfer to the α,β-double bond. The 3-, 3'-, and 4-nitro
compounds fragment in ways similar to that of chalcone itself, except for
losses of hydroxy groups from their molecular ions. The origins of the
transferred hydrogen atoms are shown by labelling experiments, and structures
are suggested for the ions formed.
Cited by
4 articles.
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