An improved and novel approach to macrolactonisation using di-tert-butyl dicarbonate
摘要:
A new, facile, mild and simple method for the synthesis of macrolides was achieved from omega- hydroxy acids using di-tert-butyl dicarbonate ( Boc(2)O), a cheap and commercially available reagent. A wide range of substrates were tested and give good yield of lactones. The effect of various simple bases on the yield of the macrolactonisation reaction was also studied. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
[EN] HOMOALLYL ALCOHOLS USEFUL AS FRAGRANCES<br/>[FR] ALCOOLS HOMOALLYLIQUES CONVENANT COMME PARFUMS
申请人:GIVAUDAN SA
公开号:WO2009065244A1
公开(公告)日:2009-05-28
Branched, highly-substituted C9-C13 homoallyl alcohols of formula (I) in which R1 and R2 are selected from H or Me and R3 is selected from H, Me and Et. The compounds are useful in fragrance applications in which a floral note is desired.
[EN] COMPOUNDS FOR PROVIDING A LONG-LASTING ODOR<br/>[FR] COMPOSÉS DESTINÉS À FOURNIR UNE ODEUR DE LONGUE DURÉE
申请人:FIRMENICH & CIE
公开号:WO2021209396A1
公开(公告)日:2021-10-21
The present invention relates to the field of perfumery. More particularly, it relates to compounds of formula (I) that are able to provide a long-lasting or substantive odor to the environment. Moreover, the present invention relates to a method of imparting a long-lasting odor to environment or to surfaces, such as hard surfaces, fabric, skin or hair. Furthermore, the present invention relates to the use of said compounds in perfumery, as well as the perfuming compositions or perfumed articles comprising the invention's compounds.
The present invention relates to compounds of formula (I) as properfume compounds. In particular, the present invention relates to a method to release a compound being a carbonyl of formula (II), a formate ester of formula (III) and/or an alcohol of formula (IV), by exposing the compound of formula (I) to an environment wherein it is oxidized. Moreover, the present invention relates to a perfuming composition and a perfumed consumer product comprising at least one compound of formula (I).
[EN] LILY OF THE VALLEY ODORANT<br/>[FR] SUBSTANCE ODORANTE AU PARFUM DE MUGUET
申请人:FIRMENICH & CIE
公开号:WO2021069331A1
公开(公告)日:2021-04-15
The present invention concerns compound of formula (I) (I) in the form of any one of its stereoisomers or a mixture thereof, and wherein R1 and R2 represent, independently from each other, a hydrogen atom or a C1-2 alkyl group; and -C(Me)2(OMe) group is, relative to position 1, a meta or a para substituent of the aromatic ring or a mixture thereof. The use as a perfuming ingredient of the invention's compound, the invention's compound as part of a perfuming composition or of a perfumed consumer product and a properfume releasing the invention's compound are also part of the present invention.
The present invention concerns compound of formula (I) in the form of any one of its stereoisomers or as a mixture thereof, and wherein R1 represents a hydrogen atom, a C1-3 alkyl group or C2-3 alkenyl group; X represents an oxygen atom when R2 represents a C1-4 alkyl group or C2-4 alkenyl group or X represents a CH2-O group when R2 represents a C2-4 alkenyl group or a MeC=O group. The use as a perfuming ingredient of the invention's compound and the invention's compound as part of a perfuming composition or of a perfuming consumer product are also part of the present invention.