A Schiff base condensation of hydroxycitronellal and methyl anthranilate, known commercially as Aurantiol or Verdantiol. It smells of soft, sweet orange-blossom and lily-of-the-valley with a powdery, slightly waxy floral warmth. Deeper facets are honeyed and mildly indolic, with excellent tenacity that anchors muguet and neroli accords.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 720.
Intensely yellow, viscous to very viscous liquid, often non-pourable at room temperature.
Almost insoluble in water, soluble in alcohol and oils, poorly soluble in propylene glycol.
Very sweet, heavy-floral Orange-blossom to Lindenflower type odor of considerable tenacity.
This Schiff’s base is the most widely used of all Schiff’s bases known in perfumery. Its low cost and considerable strength, its tenacity and versatility are virtues that make the product applicable in fragrances of all price levels and for numerous purposes. Obviously and almost inevitably used in Orangeblossom, Neroli and related heavy florals, it finds use in smaller amounts in countless other fragrance types: Citrus blends, Ambres, Orientals, Chypres, etc. It forms the steady undertone in many such sweet florals, in Honeysuckle, Frangipanni, Magnolia, exotic florals, etc. In the Citrus Cologne types it has the ability to appear even in the initial notes, besides being a fixative.
The condensation is carried out under various conditions, e.g. by simple heating to about 90° C. for several hours under stirring, or by more gentle heating under mild vacuum (50-60 mm Hg. pressure) in order to quantitatively remove the water. The theoretical water loss is about 6% of the weight of the reaction mixture.