Hexadienylidene acetone (a dienone related to pseudo-ionone / methyl heptadienone family) has a warm, diffusive spicy-fruity character with balsamic and slightly floral facets. It reads as sweet and mildly resinous, with a soft ionone-like woody undertone as it dries down.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 652.
Colorless liquid.
Almost insoluble in water, soluble in alcohol and oils.
Sweet, oily, citrusy and refreshing, green odor of moderate tenacity. Undiluted not very pleasant, rather oily-fatty, but at concentrations near 1°, or in proper composition, the odor appears more citrusy, sweeter, fresher.
This relatively simple, but commercially rare item finds use in perfume compositions as an important part of certain topnote specialties, bases, etc. It is mainly used in the citrusy type, but also in the so-called 'aldehydic' base, which is normally a composition of aliphatic aldehydes, delicately green notes, fruity notes, and a rich, but delicate floral note, often Muguet. This type base has been used conventionally in modifications (or 'copies') of very many successful luxury perfumes, including several great names.
Produced by condensation of Sorbic aldehyde and Acetone (Claisen condensation).