Alpha-methyl naphthyl ketone (acetonaphthone) has a warm, sweet floral character reminiscent of orange blossom and neroli, with a slightly waxy, fruity-almond nuance. On dry-down it becomes softer and more powdery, retaining a heady white-floral warmth often used to boost neroli and gardenia accords.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 911.
Colorless or pale yellowish oil.
Insoluble in water, soluble in alcohol and oils.
Sweet, floral, but rather harsh orange-blossom-like odor of considerable tenacity.
This ketone has been used quite widely in perfume compositions at the time when certain processes would yield an amount of the alpha-isomer along with the more desirable beta-isomer.
Produced from naphthalene with acetyl chloride and aluminum chloride (Friedel-Craft’s synthesis) using carbon disulfide as solvent in order to favor formation of alpha-isomer.