[EN] 3-(2-ALKOXYCARBONYLOXY-PHENYL) ACRYLIC ACID ESTERS AND THEIR USE AS PRECURSORS FOR THE DELIVERY OF OLFACTORY COMPOUNDS<br/>[FR] ESTERS D'ACIDE 3-(2-ALCOXYCARBONYLOXY-PHENYL) ACRYLIQUE ET LEUR UTILISATION COMME PRECURSEURS POUR L'ADMINISTRATION DE COMPOSES OLFACTIFS
申请人:GIVAUDAN SA
公开号:WO2005077881A1
公开(公告)日:2005-08-25
A compound of formula (I), their use as precursors and a method of their production wherein n, Y, R, R2, R3, and R4 has the same meaning as given in the specification.
Strictly Regiocontrolled α-Monosubstitution of Cyclic Carbonyl Compounds with Alkynyl and Alkyl Groups via Pd-Catalyzed Coupling of Cyclic α-Iodoenones with Organozincs
derivatives readily undergo Pd-catalyzed cross coupling with α-iodoenones. Although (s-Bu)2Zn also undergoes Pd-catalyzed cross coupling, only the n-Bu-substituted products were obtained. α-Benzylation and α-homobenzylation can proceed satisfactorily, whereas allylzinc and propargylzinc derivatives undergo only addition to the carbonyl group. Although some promising results have been obtained in α-homoallylation
The bromination of 2-alkyl- and 2-phenyl-1-cycloalkanones with N-bromosuccinimide and subsequent dehydrobromination with aniline gave the corresponding 2-cycloalken-1-ones.
Synthesis of 2-Alkyl-2-cyclopenten-1-ones. A Versatile Kinetic Alkylation-Ozonolysis Procedure for the Preparation of γ-Ketoaldehydes
作者:Niall W. A. Geraghty、Noreen M. Morris
DOI:10.1055/s-1989-27330
日期:——
A range of 2-alkyl-2-cyclopenten-1-ones including the prostaglandin precursor 2-(6-methoxycarbonylhexyl)-2-cyclopenten-1-one and the jasmonoid precursor 2-[(Z)-2-pentenyl]-2-cyclopenten-1-one, have been prepared by a short synthetic route which begins with 6-methyl-5-hepten-2-one and generates the key 1,4-ketoaldehyde intermediates by a kinetic alkylation-ozonolysis procedure.
Precursors for fragrant ketones and fragrant aldehydes
申请人:Givaudan SA
公开号:EP1262473A1
公开(公告)日:2002-12-04
The present invention refers to fragrance precursors of formula I
for a fragrant ketone of formula II
and one or more fragrant aldehydes or ketones of formula III and IV,
These fragrance precursors are useful in perfumery, especially in the fine and functional perfumery.