[EN] PROCESS FOR THE PREPARATION OF SATURATED ALIPHATIC KETONES<br/>[FR] PROCEDE DE PREPARATION DE CETONES ALIPHATIQUES SATUREES
申请人:DSM IP ASSETS BV
公开号:WO2006029737A1
公开(公告)日:2006-03-23
Saturated aliphatic ketones, e.g. hexahydropseudoionone, may be prepared by hydrogenating an olefinically unsaturated ketone, e.g. pseudoionone in a continuous fixed-bed mode in the absence of a solvent in the presence of a catalyst comprising a noble metal deposited on a carrier.
A process for the preparation of ketones corresponding to the general Formula I
1
in which &bgr;,&ggr;,&dgr;-allenic, di-unsaturated ketones and/or &agr;,&bgr;,&ggr;,&dgr;-conjugated, di-unsaturated ketones, obtained by reaction of propargyl alcohols with enol ethers and are converted in direct manner by hydrogenation to the saturated ketones corresponding to the general Formula I without purification by distillation.
[EN] ISOMERIZATION OF ß-KETO-ALLENES<br/>[FR] ISOMÉRISATION DE ?-CÉTO-ALLÈNES
申请人:DSM IP ASSETS BV
公开号:WO2011131607A1
公开(公告)日:2011-10-27
Isomerization of β-keto-allenes of the general formula I wherein R1 is hydrogen, methyl or ethyl, in particular hydrogen or methyl; R2 is hydrogen or methyl; R3 is hydrogen or methyl, in particular methyl and R4 is an aliphatic hydrocarbon residue containing 1 - 37 carbon atoms, into corresponding α,γ-dienones of formula II by treatment with a basic ion exchange resin.
Process for the Preparation of Saturated Aliphatic Ketones
申请人:Bonrath Werner
公开号:US20080139856A1
公开(公告)日:2008-06-12
Saturated aliphatic ketones, e.g. hexahydropseudoionone, may be prepared by hydrogenating an olefinically unsaturated ketone, e.g. pseudoionone in a continuous fixed-bed mode in the absence of a solvent in the presence of a catalyst comprising a noble metal deposited on a carrier.
Process for the preparation of saturated aliphatic ketones
申请人:DSM IP Assets B.V.
公开号:US07935849B2
公开(公告)日:2011-05-03
Saturated aliphatic ketones, e.g. hexahydropseudoionone, may be prepared by hydrogenating an olefinically unsaturated ketone, e.g. pseudoionone in a continuous fixed-bed mode in the absence of a solvent in the presence of a catalyst comprising a noble metal deposited on a carrier.