The present invention relates to a new class of compounds, α-decalones or decalols with a 6,7,8a-trimethyl substitution, and their use in perfumery to confer odor notes of the citrus (e.g. grapefruit) type.
Anaerobically biodegradable perfume delivery system
申请人:The Procter & Gamble Co.
公开号:US20020013255A1
公开(公告)日:2002-01-31
The present invention relates to a fragrance raw material delivery system comprising:
A) anaerobically biodegradable particles having:
i) an average particle size of from about 5 microns;
ii) a density of from about 0.9 g/cm
3
to about 1.5 g/cm
3
; and
B) a fragrance or fragrance accord.
The fragrance delivery systems of the present invention are suitable for use in delivering a fragrance or fragrance accord to a situs, inter alia, fabric in a manner which sustains the delivery of the aesthetic elements while providing a completely biodegradable vehicle.
Oxyfunctionalization of Aliphatic Esters by Methyl(trifluoromethyl)dioxirane
作者:Gregorio Asensio、Gloria Castellano、Rossella Mello、M. E. González Núñez
DOI:10.1021/jo9604189
日期:1996.1.1
The oxidation of lineal, cyclic, and bicyclic aliphatic p-chlorobenzoic and p-chorobenzenesulfonic acid esters 2 with methyl(trifluoromethyl)dioxirane (TFDO) (1) occurs at positions in the hydrocarbon chain distant from the directing group with a significant degree of selectivity to give the corresponding keto or hydroxy esters. Compounds 2 are relatively deactivated with respect to this oxidation due to the electron-withdrawing nature of the ester moiety. Methylene C-alpha-H and C-beta-H bonds remain unchanged in all cases, but tertiary C-beta-H bonds undergo oxidation with TFDO (1). Stereoelectronic factors are used to explain the faster reaction rate in competition experiments for the oxidation of endo-norbornyl ester 2h than for its exo-isomer 2g.