Chirality & Odour Perception
John C. Leffingwell, Ph.D.

The 5-methyl-2-(1-methyl-2-propenyl)-4-hexene-1-ols

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Photo by permission of M. Roudintska - Art & Parfum

(-)-(2S)-5-methyl-2-[(1S)-1-methylprop-2-enyl]hex-4-en-1-ol - possesses a floral rosy, natural note, very fine, presenting multiple aspects, slightly rosinol and green, reminding a little of rose oxide. It provokes indeed odor notes of the family of roses and geranium, with an extremely refined character which evokes the best fractions of rose oil.

Ref: Wolfgang Klaus Giersch, Karl-Heinrich Schulte-Elte, Cornpose terpeniques et leur utilisation a titre d’ingredients parfumants, Swiss Patent No. 680852 (Nov. 30, 1992)

(+)-(2R)-5-methyl-2-[(1R)-1-methylprop-2-enyl]hex-4-en-1-ol - develops a floral odorant note, rosy, with a dimension of Rosacène (floral composition; origin: Firmenich SA), tea rose - more pronounced than that of its (S,S)-isomer to which the odor is however closer to that of citronellol.

Ref: Wolfgang Klaus Giersch, Karl-Heinrich Schulte-Elte, Cornpose terpeniques et leur utilisation a titre d’ingredients parfumants, Swiss Patent No. 680852 (Nov. 30, 1992)

Cyclic Terpenoid Odorants

Bicyclic Terpenoid Odorants

Acyclic Terpenoid Odorants

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants

Steroid Urine Type Odorants

Sandalwood Type Odorants

Musk Odorants

Miscellaneous

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