Use of functionalized onium salts as a soluble support for organic synthesis
申请人:Vaultier Michel
公开号:US20070043234A1
公开(公告)日:2007-02-22
The invention relates to the use of a onium salt functionalized by at least one organic function, as a soluble support, in the presence of at least one organic solvent, for organic synthesis of a molecule, in a homogenous phase, by at least one transformation of said organic function. The onium salt enables the synthesized molecule to be released. The onium salt is present in liquid or solid form at room temperature and corresponds to formula A
1
+
, X
1
−
, wherein A
1
+
represents a cation and X
1
−
represents an anion.
[EN] ESTERS AS PERFUMING INGREDIENTS<br/>[FR] ESTERS EN TANT QU'INGRÉDIENTS DE PARFUM
申请人:FIRMENICH & CIE
公开号:WO2011055251A1
公开(公告)日:2011-05-12
The present invention relates to some perfuming ingredients which are esters of formula (I) wherein R1 and R2 represent each a hydrogen atom or a methyl or ethyl group; and R3 represents a C5-C8 group of formula satured or unsatured linear, branched or cyclic group.
Through a double cyclization triplet carbonylcarbenes add smoothly to double bonds in the δ and ε position, but do not react intramolecularly with C-H bonds (see scheme). The addition reaction fails if the keto group is replaced with an ester group.
CC-kupplungen von CO2 mit 1,3-dienen an eisen(0)-komplexen; carboxylatbildung und folgereaktionen
作者:Heinz Hoberg、Klaus Jenni
DOI:10.1016/0022-328x(87)85007-6
日期:1987.3
1,3-Dienes react with CO2 at ligand-iron(0) systems to form η3-allyl carboxylates. The dynamic allylic system is influenced by addition of further ligands such as phosphanes or maleic acid anhydride or acetic acid anhydride. The direction of this influence is shown on the basis of the products generated by protonolysis or insertion of CO2. When substituted 1,3-dienes are used, the 1/1 coupling step
The present invention relates to some perfuming ingredients which are esters of formula (I) wherein R
1
and R
2
represent each a hydrogen atom or a methyl or ethyl group; and R
3
represents a C
5
-C
8
group of formula satured or unsatured linear, branched or cyclic group.