IMPROVEMENT OF ORGANIC COMPOUNDS OR IMPROVEMENT RELATING TO ORGANIC COMPOUNDS Russian patent published in 2018 - IPC C11B9/00 C07C43/205 C07C69/73 

FIELD: chemistry.

SUBSTANCE: invention relates to precursor of a fragrant substance represented by the formula 1, in which X and Y together represent a double bond to the carbon atom carrying R₁ and R₂, where R₁ = H, methyl, acetyl or C₁-C₃ alkoxycarbonyl (e.g., ethoxycarbonyl). R₂ is phenyl optionally substituted by up to three (i.e., 0, 1, 2 or 3) groups selected from C₁-C₄ alkyl (e.g., methyl, ethyl, isopropyl, t-butyl), vinyl, hydroxy, C₁-C₃ alkoxy (e.g., ethoxy), and -O-CH₂-O-, for example, R₂ 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,-pentamethyl-1,2,3,4-tetrahydronaphthalen-7-yl, or R₂ = COR₃, where R₃ represents H, C₁-C₁₀ alkoxy (e.g., ethoxy, 1-(3,3-dimethylcyclohexyl)ethoxy), C₁-C₄ alkyl (e.g. methyl, ethyl, propyl, isopropyl, tert-butyl), for example, R₂ is formyl, acetyl, ethoxycarbonyl, 1-(3,3-dimethylcyclohexyl)ethoxycarbonyl, or X is OR₄ with R₄, which is H or alkyl, and Y is OR₅ with R₅, which is alkyl. Invention relates to use of a fragrance precursor as a perfume ingredient. Invention relates to perfume composition comprising the aforementioned fragrance precursor. Invention relates to composition of personal care products or home care products comprising at least a fragrance precursor or perfume composition. formula 1.

EFFECT: invention relates to method for imparting a flavor characteristic of a lily of the valley perfume composition comprising the step of adding a fragrant precursor to said composition.

11 cl, 2 ex