| abstract |
The present invention describes a fragrance delivery system which releases fragrant aldehydes or ketones and/or fragrant compounds containing an olefin function upon exposure to light. This system comprises alpha-keto esters of formulain which R'* and R''* have the meaning as defined in the application and which are generally, in case of R'*, an alkyl group carrying an abstractable hydrogen in gamma-position relative to the alpha-keto function and carrying a moiety from which is derived a fragrant compound containing an olefin function, and, in case of R''*, the organic part of a primary or secondary alcohol from R''*OH which is derived a fragrant aldehyde or ketone. |