Controlled Stepwise Release of Fragrance Alcohols from Dendrimer-Based 2-Carbamoylbenzoates by Neighbouring Group Participation
作者:Eric Frérot、Karim Herbal、Andreas Herrmann
DOI:10.1002/ejoc.200390152
日期:2003.3
2-Carbamoylbenzoates which are chemically bound to the surface of dendrimers were found to releasetertiary fragrance alcohols by neighbouring group assisted alkaline hydrolysis under mild reaction conditions. Owing to the excellent separation of the intermediate reaction products by analytical HPLC, the kinetic rate constants of the first two consecutive reaction steps of fragrance release could be
Compounds for a controlled release of active compounds
申请人:——
公开号:US20040048754A1
公开(公告)日:2004-03-11
The present invention relates to the field of perfumery. More particularly, it concerns a compound having supported carbamoyl/ester moieties which comprise an ester capable of liberating an active compound and, in proximity, a carbamoyl function facilitating the release of the active compound. The present application concerns also the uses of such compounds as active ingredient or as a precursor capable of liberating active alcohols, ketones or aldehydes, as well as compositions comprising such compounds.
COMPOUNDS FOR A CONTROLLED RELEASE OF ACTIVE COMPOUNDS
申请人:FIRMENICH SA
公开号:EP1373368A1
公开(公告)日:2004-01-02
[EN] COMPOUNDS FOR A CONTROLLED RELEASE OF ACTIVE COMPOUNDS<br/>[FR] COMPOSES SERVANT A EFFECTUER LA LIBERATION CONTROLEE DE COMPOSES ACTIFS
申请人:FIRMENICH & CIE
公开号:WO2002077074A1
公开(公告)日:2002-10-03
The present invention relates to the field of perfumery. More particularly, it concerns a compound having supported carbamoyl/ester moieties which comprise an ester capable of liberating an active compound and, in proximity, a carbamoyl function facilitating the release of the said active compound. The present application concerns also the uses of said compound, as well as the compositions comprising said compounds.
Parameters Influencing the Release of Tertiary Alcohols from the Surface of “Spherical” Dendrimers and “Linear” Stylomers by Neighbouring-Group-Assisted Hydrolysis of 2-Carbamoylbenzoates
作者:Alain Trachsel、Jean-Yves de Saint Laumer、Olivier P. Haefliger、Andreas Herrmann
DOI:10.1002/chem.200801350
日期:2009.3.9
Investigation of the controlled release of tertiaryalcoholsfrom the surface of dendrimers and “stylomers” as polymer model systems (see scheme) showed that the polarity of the conjugates and structural modifications in close proximity to the release unit have a stronger influence on the rates of hydrolysis than the size (generation) or shape (linear or spherical) of the macromolecules.