UTILISATION DE DIHYDROBENZOFURANONES A TITRE D'INGREDIENTS PARFUMANTS
申请人:FIRMENICH SA
公开号:EP0707575A1
公开(公告)日:1996-04-24
US5679634A
申请人:——
公开号:US5679634A
公开(公告)日:1997-10-21
[EN] USE OF DIHYDROBENZOFURANONES AS SCENTING INGREDIENTS<br/>[FR] UTILISATION DE DIHYDROBENZOFURANONES A TITRE D'INGREDIENTS PARFUMANTS
申请人:FIRMENICH S.A.
公开号:WO1995030667A1
公开(公告)日:1995-11-16
(EN) The use of (3H)-benzo[b]furan-2-ones, substituted particularly by alkyl groups, for preparing scenting compositions and scented articles to which such compounds impart lactone, coumarin, fruity or musky notes, is disclosed.(FR) On décrit l'utilisation de (3H)-benzo[b]furan-2-ones substituées, notamment par des groupes alkyles, pour la préparation de compositions parfumantes et articles parfumés, auxquels ces composés impartissent des notes odorantes de type lactonique, coumariné et fruité, ou encore musqué.
Enantioselective Black rearrangement catalyzed by chiral bicyclic imidazole
A newly developed chiral imidazole nucleophilic catalyst, Acyloxy-DPI, was readily prepared and successfully applied to the enantioselective Black rearrangement with up to 88% ee for a wide range of substrates possessing different substituted groups. A plausible mechanism for the high enantioselectivity was proposed.