Back to results
US 2003/0125584 A1Published application
6-Alkylindan-1-ones as fragrances
OwnerSteffen Sonnenberg, Oskar Koch +1inventors
InventorsSteffen Sonnenberg, Oskar Koch, Bertrand Duchaufour
Life of this patent
Estimating the term…
Abstract
The invention relates to the use of 6-alkylindan-1-ones as fragrances, to a process for their preparation, to fragrance mixtures comprising 6-alkylindan-1-ones, and to perfumed products comprising 6-alkylindan-1-ones.
Claims4
Fragrance mixtures comprising compounds of the formula (1)
- 5
- wherein
- R1 is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl,
- R2, R3, independently of one another, are H, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl,
- with the proviso that R2 and R3 together contain at most 4 carbon atoms and R1, R2 and R3 together contain at most 8 carbon atoms.
2 more elements
Perfumed products comprising at least one compound of the formula (1)
- 6
- wherein
- R1 is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl,
- R2, R3, independently of one another, are H, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl,
- with the proviso that R2 and R3 together contain at most 4 carbon atoms and R1, R2 and R3 together contain at most 8 carbon atoms.
2 more elements
A process for the preparation of compounds of the formula (1)
- 7
- with the proviso that R2 and R3 together contain at most 4 carbon atoms and R1, R2 and R3 together contain at most 8 carbon atoms, comprising the following steps:
- a) reacting (alkyl-)benzenes of the formula (2) with acrylic acid derivatives of the formula (3) to give intermediates of the formula (4),
- b) Cyclization of the intermediates (4) to give the compounds of the formula (1),
- 8
- wherein the radicals R, R1, R2 and R3 have the following meanings:
- R is hydrogen, C1-C4-alkyl,
- R1 is hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl,
- R2, R3, independently of one another, are H, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl.
6 more elements
Dependencies are inferred from the claim text.