Cyclic ketones and their use as perfuming ingredients
AssigneeFirmenich SA
InventorsChristian Chapuis, Karl-Heinrich Schulte-Elte, Herve Pamingle, Christian Margot
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Abstract
Novel compounds of formula ##STR1## wherein the dotted lines indicate the location of a single or double bond, symbol R.sup.1 stands for a hydrogen atom or a methyl radical, symbol R.sup.2 represents a linear or branched, saturated or unsaturated, C.sub.1 to C.sub.4 alkyl radical, provided that R.sup.1 is not hydrogen when R.sup.2 represents a methyl or n-propyl radical and the ring is saturated. Compounds (Ia) are useful as perfuming ingredients. A process for their preparation is disclosed.
Claims6
A compound of formula ##STR39## wherein the dotted lines indicate the location of a single or double bond, symbol R.sup.1 stands for a hydrogen atom or a methyl radical, symbol R.sup.2 represents a linear or branched, saturated or unsaturated, C.sub.1 to C.sub.4 alkyl radical, with the proviso that R.sup.1 cannot be hydrogen when R.sup.2 is a methyl or n-propyl radical and the ring is saturated.
Trans, (E)-4-(2,2,3,6-tetramethyl-3-cyclohexen-1-yl)-3-buten-2-one;
- trans, (E)-4-(2,2,6-trimethyl-3-methylene-1-cyclohexyl)-3-buten-2-one;
- trans, (E)-1-(2,2,6-trimethyl-3-methylene-1-cyclohexyl)-1-penten-3-one;
- or (E)-4-(2,2,c-3,t-6-tetramethyl-r-1-cyclohexyl)-3-buten-2-one in the form of a racemate or an optically active enantiomer thereof.
Dependencies are inferred from the claim text.