The invention relates to specific phenacyl ethers of formula (I), as defined herein, which can be used as photolabile pro-fragrances. The invention further relates to washing and cleaning agents, cosmetic agents, and air freshening agents containing such phenacyl ethers, and a method for the long-lasting scenting of surfaces.

A fragrance composition comprising a low vapor pressure VOC and at least one low vapor pressure VOC potentiator compound, which reduces, or altogether completely obviates the use of HVPVOC solvents in fragrance compositions.

The present invention relates to a fragrance composition that has a vanilla odor property, that is chemically stable and that can be blended in a variety of products, which can be an alternative material for vanillin or ethyl vanillin. The fragrance composition of the present invention comprises: A) one or more selected from the group consisting of vanillyl alcohol, ethylvanillyl alcohol, isovanillyl alcohol and veratryl alcohol; and B) one or more selected from the group consisting of 2-ethoxy-4-methylphenol, 2-methoxy-4-methylphenol, 2-ethoxy-5-methylphenol, 2-ethoxy-4-ethylphenol, 2-ethoxy-5-ethylphenol, 2-methoxy-p-cresol methyl carbonate and 2-ethoxy-5-(1-propenyl)-phenol, wherein the total content of component A and component B in the fragrance composition is 0.01-90% by mass, and the mixing ratio of component A and component B (on a mass basis) is in a range of 99:1-70:30.

The present invention relates to the use of 3,3′-dimethoxy-4,4′-dihydroxystilbene as an odorous substance, in particular for developing a vanilla odor under the action of light. Furthermore, the invention relates to a composition which contain 3,3′-dimethoxy-4,4′-dihydroxystilbene and additionally a carrier, fragrance compositions and/or an odorant material which contain said compound and a process for imparting or modifying an odor of compositions by adding said compound to these compositions. The invention additionally relates to a process for obtaining 3,3′-dimethoxy-4,4′-dihydroxystilbene from lignin-containing compositions.

An encapsulated perfume composition wherein the shell contains a polyurea resin and the core contains a perfume comprising an aldehyde-containing perfume ingredient or ingredients, a non-aromatic cyclic perfume ingredient, and an alkyl salicylate and/or a 2,2,2-trisubstituted acetal,

A perfume composition includes groups of perfume components that produce enhanced sensory performance. The composition includes components that have synergistic odor properties.

A fragrance precursor of 3-(4-isobutyl-2-methyl phenyl)propanal, comprising at least an enamine and/or an aminal as reaction product of 3-(4-isobutyl-2-methylphenyl)propanal (compound according to formula (I)) and a primary and/or secondary amine

##STR00001##

useful as a perfume ingredient.

A fragrance precursor represented by the formula 1

##STR00001##

wherein

X and Y together represent a double bond to a carbon atom bearing R.sub.1 and R.sub.2, with R.sub.1═H, methyl, acetyl or C.sub.1—C.sub.3 alkoxycarbonyl (e.g. ethoxycarbonyl); and R2=phenyl optionally substituted with up to 3 (i.e. 0, 1, 2 or 3) groups selected from C.sub.1—C.sub.4 alkyl (e.g. methyl, ethyl, iso-propyl, tert-butyl), vinyl, hydroxy, C.sub.1—C.sub.3 alkoxy (e.g. ethoxy), and —O—CH.sub.2—O—, e.g. R.sub.2 is benzo[d][1,3]dioxol-5-yl, 4-methylphenyl, 4-methoxyphenyl, 4-vinylphenyl or 3-ethoxy-4-hydroxyphenyl or

R2=naphthyl, (naphthyl) methyl, 1,1,2,4,4,8-hexamethyl-1,2,3,4-tetrahydronaphthalen-7-yl, or 1,1,2,4,4,-penta methyl-1,2,3,4-tetrahydronaphthalen-7-yl or

R2=COR3, wherein R3 is H, C1-C10 alkoxy (e.g. ethoxy, 1-(3,3-dimethylcyclohexyl)ethoxy), C1-C4 alkyl (e.g. methyl, ethyl, propyl, iso-propyl, tert-butyl), e.g. R2 is formyl, acetyl, ethoxycarbonyl, 1-(3,3-dimethylcyclohexyl)ethoxycarbonyl; or wherein

X is OR4, with R4 being H or alkyl, and

Y is OR5, with R5 being alkyl,

useful as a perfume ingredient.

A compound represented by the formula 1

##STR00001## wherein R.sub.1 is H, or when R.sub.2 and R.sub.3 is H, then R.sub.1 is CHR.sub.5CHR.sub.6CHO, CR.sub.5═CR.sub.6CHO or C(CH.sub.3)CHO, wherein R.sub.5, R.sub.6 each independently may represent H or methyl; R.sub.2 is H, or when R.sub.1 and R.sub.3 is H, then R.sub.2 is CHR.sub.5CHR.sub.6CHO, CR.sub.5═CR.sub.6CHO or C(CH.sub.3)CHO, wherein R.sub.5, R.sub.6 each independently may represent H or methyl; R.sub.3 is H, or when R.sub.1 and R.sub.2 is H, then R.sub.3 is CHR.sub.5CHR.sub.6CHO, CR.sub.5═CR.sub.6CHO or C(CH.sub.3)CHO, wherein R.sub.5, R.sub.6 each independently may represent H or methyl; and R.sub.4 is methyl or a branched or linear, saturated or unsaturated, unsubstituted or substituted (optionally with cyclopropyl groups), C.sub.2-C.sub.7 alkyl or alkenyl residue, preferentially isobutyl, isoamyl.

Said compounds are useful as perfume ingredients in personal care and household care products.

An ethanol-free perfumed composition includes a fragrance and: a) at least one crypto anionic surfactant, b) at least one ethoxylated nonionic surfactant having a molecular weight greater than 1700 containing at least 40% of ethylene oxide, d) at least one glycol having from 3 to 8 carbon atoms, and e) water; wherein the weight ratio of the fragrance to the surfactants and glycols is from 1/1 to 1/6.