[EN] PERFUME SYSTEM FOR PERFUMED CONSUMER PRODUCT<br/>[FR] SYSTÈME DE PARFUM POUR PRODUIT PARFUMÉ DE CONSOMMATION
申请人:FIRMENICH & CIE
公开号:WO2021214205A1
公开(公告)日:2021-10-28
The present invention relates to a perfume system comprising a core-shell microcapsule A, optionally, a core-shell microcapsule B, and optionally, a free perfume oil, wherein the core of the core-shell microcapsule A and/or the free perfume oil comprises a 2-oxoacetate derivative of formula (I) as well as a perfumed consumer product comprising the same and methods and uses of the same for enhancing, conferring, increasing and/or modifying the fragrance properties and/or the fragrance intensity of perfumed consumer products.
Slow release of fragrant compounds in perfumery using a keto esters
申请人:Firmenich SA
公开号:US06218355B1
公开(公告)日:2001-04-17
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 &agr;-keto esters of formula
in 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 &ggr;-position relative to the &agr;-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.
Rapid Regio- and Diastereoselective Paternò−Büchi Reaction of Alkyl Phenylglyoxylates
作者:Shengkui Hu、Douglas C. Neckers
DOI:10.1021/jo9615054
日期:1997.2.1
excited states of alkyl phenylglyoxylates react rapidly (k = 9.4 x 10(9) M(-)(1) s(-)(1)) with electron rich alkenes forming oxetanes with high regio and stereoselectivity. The well-known intramolecular gamma-hydrogen abstraction (NorrishtypeII) cannot compete. When less electron-rich alkenes are used, the NorrishtypeIIreaction becomes competitive. Intramolecular Paternò-Büchi reactions predominate
烷基苯乙醛酸酯的三重激发态快速反应(k = 9.4 x 10(9)M(-)(1)s(-)(1))与富含电子的烯烃形成氧杂环丁烷,具有较高的区域和立体选择性。众所周知的分子内γ-氢提取(Norrish II型)无法竞争。当使用较少的富电子烯烃时,Norrish II型反应变得具有竞争性。分子内的Paternò-Büchi反应在含有适当定位的富电子烯基的烷基苯基乙醛酸酯中占主导地位。该反应的区域选择性由中间体1,4-双自由基的稳定性来解释。系统间交叉时的适当构象决定了产物的立体选择性。
Slow release of fragrant compounds in perfumery using alpha-keto esters
申请人:FIRMENICH SA
公开号:US20010014661A1
公开(公告)日:2001-08-16
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 &agr;-keto esters of formula
1
in 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 &ggr;-position relative to the &agr;-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.
Slow release of fragrant compounds in perfumery using &agr;-keto esters
申请人:Firmenich SA
公开号:US06492323B2
公开(公告)日:2002-12-10
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 &agr;-keto esters of formula
in 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 &ggr;-position relative to the &agr;-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.