Process
AssigneeGivaudan SA
InventorsTse CHI-LAM, Martin Alan LOVCHIK, Simon ELLWOOD, Andreas GOEKE
Life of this patent
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Abstract
The regio-selective functionalization of a dialkyl benzene compound wherein the ratio of the compound functionalized at position (a) to the compound functionalized at the position (b) is at least 70:30, more particularly at least 80:20, still more particularly at least 85:15, and still more particularly at least 90:10, characterised in that the substituent R is an isobutyl group.
Claims24
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A compound according to the formula I
- wherein R1 through R4 is independently H or methyl;
- and
- R5 is a branched or linear, saturated or unsaturated C3-C7 alkyl, alkenyl, cycloalkyl or cycloalkenyl residue;
- wherein the compound is a perfume ingredient.
A compound according to formula I
- wherein R1 through R4 is independently H or methyl;
- and
- R5 is a branched or linear, saturated or unsaturated C3-C7 alkyl or alkenyl, cycloalkyl or cycloalkenyl residue;
- and wherein said compound is not 4-(4-(tert-butyl)phenyl)butanal, 4-(4-isopropylphenyl)butanal, 4-(4-isobutylphenyl)butanal, 4-(4-(tert-butyl)phenyl)-3-methylbutanal.
A pro-perfume, adapted to release the compound represented by the formula I
- wherein R1 through R4 is independently H or methyl;
- and
- R5 is a branched or linear, saturated or unsaturated C3-C7 alkyl, alkenyl, cycloalkyl or cycloalkenyl residue.
A perfume composition comprising a compound represented by the formula I
- wherein R1 through R4 is independently H or methyl;
- and
- R5 is a branched or linear, saturated or unsaturated C3-C7 alkyl, alkenyl, cycloalkyl or cycloalkenyl residue;
- and/or,
- comprising a pro-perfume adapted to release the compound represented by the formula I.
A personal care or household care composition comprising a compound according to the formula I
- wherein R1 through R4 is independently H or methyl;
- and
- R5 is a branched or linear, saturated or unsaturated C3-C7 alkyl, alkenyl, cycloalkyl or cycloalkenyl residue.
A method of imparting muguet odour characteristics to a fine fragrance or consumer product comprising the step of:
- adding thereto an aryl-substituted butanal compound according to the formula I
- wherein R1 through R4 is independently H or methyl;
- and
- R5 is a branched or linear, saturated or unsaturated C3-C7 alkyl, alkenyl, cycloalkyl or cycloalkenyl residue;
- and/or a pro-perfume adapted to release the compound represented by the formula I,
- with the proviso that said fine fragrance or consumer product excludes any aryl-substituted butanal compounds, which have a greatly reduced susceptibility of said compounds to undergo an enzymatically-mediated degradation to their benzoic acid derivatives when incubated with hepatocytes isolated from rats, said compounds being suitable for addition on the basis that they do far less degrade to their benzoic acid derivatives in comparison to Lilial™.
A perfume composition according to claim 147, wherein the additional fragrance ingredients are selected from:
- 3-(4-isobutyl-2-methylphenyl)propanal;
- and, 3-(4-(tert-butyl)-2-methylphenyl)-2-methylpropanal.
Dependencies are inferred from the claim text.