Use of 4,8 dimethyl-3,7 nonadien-2-ol as fragrance
AssigneeBASF SE
InventorsStefan Rüdenauer, Ralf Pelzer, Wolfgang Krause
Life of this patent
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Abstract
4,8-Dimethyl-3,7-nonadien-2-ol in which the weight ratio of (E)-4,8-dimethyl-3,7-nonadien-2-ol to the sum of (E)- and (Z)-4,8-dimethyl-3,7-nonadien-2-ol is at least 80% or in which the weight ratio of (Z)-4,8-dimethyl-3,7-nonadien-2-ol to the sum of (E)- and (Z)-4,8-dimethyl-3,7-nonadien-2-ol is at least 80%, is used as fragrance. The fragrances have a unique rose-like, floral character. Citrus-like, minty, green accompanying notes reminiscent of rhubarb arise.
Claims18
1-18. (canceled)
A fragrance composition comprising 4,8-dimethyl-3,7-nonadien-2-ol wherein the weight ratio of (E)-4,8-dimethyl-3,7-nonadien-2-ol to the sum of (E)- and (Z)-4,8-dimethyl-3,7-nonadien-2-ol is at least 80%.
A fragrance composition comprising 4,8-dimethyl-3,7-nonadien-2-ol wherein the weight ratio of (Z)-4,8-dimethyl-3,7-nonadien-2-ol to the sum of (E)- and (Z)-4,8-dimethyl-3,7-nonadien-2-ol is at least 80%.
A process for the preparation of 4,8-dimethyl-3,7-nonadien-2-ol suitable as fragrance which comprises reacting 3,7-dimethylocta-2,6-dienal, wherein the weight ratio of (E)-3,7-dimethylocta-2,6-dienal to the sum of (E)-3,7-dimethylocta-2,6-dienal and (Z)-3,7-dimethylocta-2,6-dienal is at least 80%, with an organometallic compound which transfers methyl groups.
A process for the preparation of 4,8-dimethyl-3,7-nonadien-2-ol suitable as fragrance which comprises reacting 3,7-dimethylocta-2,6-dienal, in which the weight ratio of (Z)-3,7-dimethylocta-2,6-dienal to the sum of (E)-3,7-dimethylocta-2,6-dienal and (Z)-3,7-dimethylocta-2,6-dienal is at least 80%, with an organometallic compound which transfers methyl groups.
Dependencies are inferred from the claim text.