PRECURSOR COMPOUNDS FOR FRAGRANT ALDEHYDES
    15.
    发明申请

    公开(公告)号:US20190276387A1

    公开(公告)日:2019-09-12

    申请号:US16347289

    申请日:2017-11-28

    Applicant: GIVAUDAN SA

    Abstract: A precursor compound of a fragrant aldehyde is provided, as well as a method of forming such a compound, a kit comprising said compound, and certain uses thereof. The precursor compound has formula (I), wherein A is a hydrocarbon residue of a fragrant aldehyde A-CHO; and X and Y are independently selected from the group consisting of a nitrile, a keto, and an ester functional group. One such precursor compound is ethyl 2-acetyl-4-methyltridec-2-enoate enriched in its Z-isomer, which is a thermally stable precursor of 2-methyl undecanal.

    IMPROVEMENTS IN OR RELATING TO ORGANIC COMPOUNDS

    公开(公告)号:US20170298292A1

    公开(公告)日:2017-10-19

    申请号:US15516828

    申请日:2014-11-10

    Applicant: GIVAUDAN SA

    Abstract: A fragrance precursor represented by the formula 1 whereinX and Y together represent a double bond to a carbon atom bearing R1 and R2, with R1═H, methyl, acetyl or C1—C3 alkoxycarbonyl (e.g. ethoxycarbonyl); and R2=phenyl optionally substituted with up to 3 (i.e. 0, 1, 2 or 3) groups selected from C1—C4 alkyl (e.g. methyl, ethyl, iso-propyl, tert-butyl), vinyl, hydroxy, C1—C3 alkoxy (e.g. ethoxy), and —O—CH2—O—, e.g. R2 is benzo[d][1,3]dioxol-5-yl, 4-methylphenyl, 4-methoxyphenyl, 4-vinylphenyl or 3-ethoxy-4-hydroxyphenyl orR2=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 orR2=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 whereinX is OR4, with R4 being H or alkyl, andY is OR5, with R5 being alkyl,useful as a perfume ingredient.

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