Abstract
The mixtures of aromatic aldehydes
produced from 12 species of eucalypt woods and eight Australian gymnosperm
woods by oxidation with nitrobenzene and alkali were separated by sublimation
and the individual aldehydes identified. A paper partition chromatographic
method for the separation of the aldehydes was used to confirm the results of
the sublimation separation and to identify traces of aldehydes in some of the
mixtures. The eucalypt woods all yielded vanillin, syringaldehyde, and traces
of p-hydroxybenzaldehyde. The gymnosperm woods yielded mainly vanillin but
traces of syringaldehyde were produced from some and traces of
p-hydroxybenzaldehyde from most.
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