Basf Se Corporation

Basf Aktiengesellschaft

Ströfer, Eckhard

Gerd-Dieter Tebben

Rolf Pinkos

Tilman Sirch

Maria Guixa Guardia

Rocco Paciello

Thomas Krug

Oliver Bey

Gunnar Heydrich

Andreas Keller

Martin Haubner

Mathias Schelwies

Georg Seeber

Daniel Breuninger

Günter Wegner

Stephanie Renz

Heiko Urtel

Alexander Hauk

Darijo Mijolovic

Sebastien Garnier

Qiang Miao

Rolf Tompers

Joaquim Henrique Teles

Rolf-Hartmuth Fischer

Harald Rust

Heiner Schelling

Berend Eling

Michael Koch

Daniel Urbanczyk

Christophe Bauduin

Christian Mueller

Armin Diefenbacher

Anton Meier

Andrea Haunert

Matthias Eiermann

Eckhard Ströfer

Alfred Krause

Andreas Kunst

Christian Müller

Michael Schelper

Dag Wiebelhaus

Beatrice Röβler-Feigel

Jens Heimann

Olivier Abillard

Jörn Karl

Todd C Spengeman

Tanja Kirchner

Sabine Borchers

Franz Borgel

Jeffrey T Andress

Susanne Szeschkus

Ludwig E Heck

Stephanie A Bejune

Todd Gasiorowski

Jenny Reuber

Rocco Pacielo

Beatrice Roessler-Feigel

Stephanie Bejune

The present invention relates to a process for the preparation of an optically active carbonyl compound by asymmetric hydrogenation of a prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound with hydrogen in the presence of at least one optically active transition metal catalyst that is soluble in the reaction mixture and which has rhodium as catalytically active transition metal and a chiral, bidentate bisphosphine ligand, wherein the reaction mixture during the hydrogenation of the prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound additionally comprises at least one compound of the general formula (I):

Method for synthesizing optically active carbonyl compounds

The present invention relates to a process for the preparation of an optically active carbonyl compound by asymmetric hydrogenation of a prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound with hydrogen in the presence of at least one optically active transition metal catalyst that is soluble in the reaction mixture and which has rhodium as catalytically active transition metal and a chiral, bidentate bisphosphine ligand, wherein the reaction mixture during the hydrogenation of the prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound additionally comprises at least one compound of the general formula (I): 

The present invention relates to a process for the preparation of an optically active carbonyl compound by asymmetric hydrogenation of a prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound with hydrogen in the presence of at least one optically active transition metal catalyst that is soluble in the reaction mixture and which has rhodium as catalytically active transition metal and a chiral, bidentate bisphosphine ligand, wherein the reaction mixture during the hydrogenation of the prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound additionally comprises at least one compound of the general formula (I): in which

In a process for preparing a supported hydrogenation catalyst with increased hydrogenation activity, which comprises a hydrogenating metal and/or an oxide of a hydrogenating metal on an AlO-containing support material, said calcined supported hydrogenation catalyst is treated before or after the final shaping thereof and before use thereof in the hydrogenation with a base solution having a pH of &#x3e;10 at a temperature in the range from 20 to 120&#xb0; C. for 1 to 300 hours.

Method for producing a supported hydrogenation catalyst having increased hydrogenation activity

The present invention relates to a process for hydrogenating oligo- and/or polyesters obtainable by esterifying a DCS with a diol or diol mixture, said hydrogenation being performed in the presence of a catalyst whose catalyst precursor comprises copper oxide, aluminum oxide and at least one oxide of lanthanum, of iron, of tungsten, of molybdenum, of titanium or of zirconium, and to a process for preparing 1,6-hexanediol by catalytically hydrogenating ester mixtures which comprise, as main components, oligo- and polyesters of adipic acid and 6-hydroxycaproic acid, and are obtained by esterifying DCS with diols, especially 1,6-hexanediol or diol mixtures.

Method for producing 1,6-hexanediol by hydrogenation of oligo- and polyesters

The invention relates to a process for preparing 1,6-hexanediol, preferably with at least 99.5% purity, which are especially virtually free of 1,4-cyclohexanediols, from a carboxylic acid mixture which is obtained as a by-product of the catalytic oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases and by water extraction of the reaction mixture, by hydrogenating the carboxylic acid mixture, esterifying and hydrogenating a substream to hexanediol.

Method for producing 1,6-hexanediol

Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound of or alkoxylated derivatives thereof.

Use of 2-isopropyl-2-alkyl-1,3-propanediols for preparing polymers

A polymer obtainable by polycondensation or polyaddition of monomeric compounds, wherefor accompanying use is made as monomeric compound of 

Use of a C11 diol or C11 diol mixture for producing polymers

The invention relates to a process for preparing 1,6-hexanediol and caprolactone, preferably with at least 99.5% purity, which are especially virtually free of 1,4-cyclohexanediols, from a carboxylic acid mixture which is obtained as a by-product of the catalytic oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases and by water extraction of the reaction mixture, by hydrogenating the carboxylic acid mixture, esterifying and hydrogenating a substream to hexanediol and cyclizing 6-hydroxycaproic ester, the 1,4-cyclohexanediols being removed either in the course of fractionation of the esterification mixture or last from the caprolactone.

Method for producing 1,6-hexanediol and caprolactone

The present invention provides a process for preparing &#x3b5;-caprolactone in a purity of more than 99% by cyclizing 6-hydroxycaproic esters in the liquid phase at from 150 to 400&#xb0; C. and from 1 to 1020 hPa abs., and removing and condensing the compounds which are volatile under cyclization conditions, which comprises thermally treating the remaining bottom product of the cyclization in at least one further reactor, removing and condensing volatile compounds and obtaining &#x3b5;-caprolactone by distillation from the condensates.

Process for preparing &#x3b5;-caprolactone

The invention relates to a process for preparing &#x3b5;-caprolactone from 6-hydroxycaproic ester in the gas phase in the presence of activated carbon as a catalyst and subsequent distillation.

Process for preparing epsilon-caprolactone

The present invention relates to a process for preparing at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group, at least comprising the stages:

Process for preparing pure cyclododecanone

The present application relates to an improved process for preparing 6-hydroxycaproic esters from the by-product mixtures which are obtained in the oxidation of cyclohexane to cyclohexanol and cyclohexanone with oxygen or oxygen-comprising gas mixtures.

Process for preparing 6-hydroxycaproic esters

The present application relates to a process for reacting a composition I comprising at least one aldehyde with hydrogen in the presence of a catalyst in at least one main reactor and at least one postreactor, wherein at least 50% of the fresh hydrogen fed to the reaction system is fed into at least one postreactor. In a preferred embodiment, composition I comprises at least one further organic compound.

Method for the hydrogenation of mass fluxes containing aldehyde

The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by

Method for production of 1,6-hexanediol with a purity in excess of 99.5%

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Mannheim, Germany

Gerd-Dieter Tebben