Steric effects in the catalytic amination of γ-, δ-, and ε-glycols
摘要:
The amination of butane-1,4-diol, isomeric dipropylene glycols, and cyclohexane-1,4-diyldimethanol in the presence of nickel/copper/chromium catalysts has been studied. The effect of the initial glycol structure on the reaction selectivity has been estimated.
[EN] CLEAVABLE MULTI-ALCOHOL-BASED MICROCAPSULES<br/>[FR] MICROCAPSULES CLIVABLES À BASE D'ALCOOLS MULTIPLES
申请人:FIRMENICH & CIE
公开号:WO2021023645A1
公开(公告)日:2021-02-11
The present invention relates to a new process for the preparation of microcapsules based on cleavable multi-alcohols. Cleavable multi-alcohol-based microcapsules are also an object of the invention. Perfuming compositions and consumer products comprising said capsules, in particular perfumed consumer products in the form of home care or personal care products, are also part of the invention.
The present invention relates to extracts of
Isochrysis
sp., preferably Tahitian
Isochrysis,
its cosmetic, dermatological and/or therapeutic uses and compositions and cosmetic, dermatological or therapeutic products comprising such an extract of
Isochrysis
sp., preferably Tahitian
Isochrysis.
[EN] PROCESS FOR PREPARING MICROCAPSULES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE MICROCAPSULES
申请人:FIRMENICH & CIE
公开号:WO2020020829A1
公开(公告)日:2020-01-30
The present invention relates to a new process for the preparation of core-shell microcapsules. Microcapsules are also an object of the invention. Perfuming compositions and consumer products comprising said capsules, in particular perfumed consumer products in the form of home care or personal care products, are also part of the invention.
[EN] 2-HYDROXY-6-METHYL-HEPTANE DERIVATIVES AS PERFUMING INGREDIENTS<br/>[FR] DÉRIVÉS DU 2-HYDROXY-6-MÉTHYL-HEPTANE EN TANT QUE COMPOSANTS PARFUMANTS
申请人:FIRMENICH & CIE
公开号:WO2011135487A1
公开(公告)日:2011-11-03
The present invention relates to the field of perfumery. More particularly, it concerns some derivatives of formula 5 in the form of any one of its stereoisomers or a mixture thereof, and wherein R1 represents a hydrogen atom, a C1-4 alkyl or alkenyl group, or a (CHR)2OH group, each R being a hydrogen atom or a methyl group; R2 represents a hydrogen atom or a 10 methyl, ethyl or n-propyl group; and R3 represents a hydrogen atom or a methyl group; as well as their use as perfuming ingredients. The present invention concerns also the compositions or articles containing said compounds.
[EN] COMPOUNDS FOR A CONTROLLED RELEASE OF ACTIVE PERFUMING MOLECULES<br/>[FR] COMPOSÉS POUR UNE LIBÉRATION CONTRÔLÉE DE MOLÉCULES PARFUMANTES ACTIVES
申请人:FIRMENICH & CIE
公开号:WO2013139766A1
公开(公告)日:2013-09-26
The present invention relates to the field of perfumery. More particularly, it concerns compounds comprising at least one β-thio carbonyl or nitrile moiety capable of liberating an active molecule selected from an α,β-unsaturated ketone, aldehyde or nitrile. The present invention concerns also the use of said compounds in perfumery as well as the perfuming compositions or perfumed articles comprising the invention's compounds. (I) wherein: a) m represents an integer from 1 to 6; b) Pro represents a hydrogen atom or a group susceptible of generating an odoriferous α,β-unsaturated ketone, aldehyde or nitrile and is represented by the formulae (II) or (II') in which the wavy line indicates the location of the bond between said Pro and the sulfur atom S; and at least one of the Pro groups is of the formula (II) or (II').