Evonik Degussa Gmbh

Evonik Oxeno Gmbh

Burkard Kreidler

Dirk Fridag

Robert Franke

Dieter Hess

Bjoern Wechsler

Bernhard Schemmer

Detlef Selent

Andrea Christiansen

Klaus-Diether Wiese

Dietrich Maschmeyer

Armin Börner

Armin Boerner

Markus Winterberg

Reiner Bukohl

Bart Hamers

Christian Boeing

Gunnar Schilling

Doris Neumann

Dieter Vogt

Laura Bini

Michele Janssen

Tobias Laiblin

Wolfgang Garstka

Michèle Janssen

Armin Prof Börner

The subject matter of the present invention is a plurality of products and the use thereof as a catalytically active composition in a method for producing aldehydes.

Organophosphorus compounds based on anthracenetriol

The invention relates to a method for producing 6-chlorodibenzo[d,f][1,3,2]-dioxaphosphepin (formula 1), comprising the following steps: a) addition of 2,2'-dihydroxybiphenyl, which is suspended in an inert solvant. into a reactor to an excess of phosphorous trichloride under inert gas and stirring; b) discharge and neutralization of the resulting gases from the reaction mixture; c) separation of the excess phosphorous trichloride and the solvant; d) obtention of 6-chlorodibenzo[d,f][1,3,2]-dioxaphosphepin.

Method for producing 6-chlorodibenzo[D,F] [1,3,2] dioxaphosphepin

The invention relates to a process for producing 6,6'-[(3,3&#x2032;-di-tert-butyl-5,5&#x2032;-dimethoxy-1,1&#x2032;-biphenyl-2,2&#x2032;diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepine), abbreviated to biphephos (see formula 1), with low chlorine content. 

Method for the preparation of biphephos

The invention relates to the synthesis of tetraphenol-substituted structures, in particular meta-substituted xylenes. Said tetraphenol-type structures are reacted to obtain organic phosphorus compounds, in particular organophosphites. The invention further relates to the production of catalytically active compositions which contain transition metals in addition to the aforementioned organic phosphorus compounds. According to another subject matter of the invention, said catalytically active compositions are used in chemical reactions with small molecules, e.g. HCN, CO, hydrogen, and amines.

Organophosphorus compounds based on tetraphenol (TP)-substituted structures

The present invention describes a process for the parallel selective hydrogenation of branched and unbranched multiply unsaturated C-C-hydrocarbons in olefin-containing hydrocarbon mixtures with minimization of hydrogenation and isomerization of the olefins present in the stream.

Process for the selective hydrogenation of multiply unsaturated hydrocarbons in olefin-containing hydrocarbon mixtures

The invention relates to a method for producing 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin (formula 1), comprising the following steps: a) addition of 2,2'-dihydroxybiphenyl, which is suspended in an inert solvant. into a reactor to an excess of phosphorous trichloride under inert gas and stirring; b) discharge and neutralization of the resulting gases from the reaction mixture; c) separation of the excess phosphorous trichloride and the solvant; d) obtention of 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin.

Method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin

The invention relates to a method for producing 6-chlorodibenzo[d,f][1,3,2]-dioxaphosphepin (formula 1), comprising the following steps: a) addition of liquid 2,2'-dihydroxybiphenyl into a reactor to an excess of phosphorous trichloride under inert gas and stirring; b) discharge and neutralization of the resulting gases from the reaction mixture; c) separation of the excess phosphorous trichloride; d) obtention of 6-chlorodibenzo[d,f][1,3,2]-dioxaphosphepin.

Method for producing 6-chlorodibenzo[D,F] [1 3,2]Dioxaphosphepin

The invention relates to a method for separating 1-butene from C-containing hydrocarbon mixtures, comprising isobutene and 1-butene, by hydroformylation, wherein the catalytic system used is made of one of the transition metals of the group 8 to 10, preferably rhodium, and a bisphosphite ligand of the formula (I), where X is a divalent substituted or unsubstituted bisalkylene or bisarylene group having one or more heteroatom(s), Y is a divalent substituted or unsubstituted bisarylene or bisalkylene group having one or more heteroatom(s), Z is oxygen or NR, and R, R, R, Rare identical or different, substituted or unsubstituted, linked, unlinked or condensed aryl or heteroaryl groups, and Ris hydrogen or a substituted or unsubstituted alkyl or aryl group having one or more heteroatom(s), wherein the bisphosphite ligand of the formula (I) is used in an excess of a molar ratio of 100:1 to 1:1 to the transition metal, and that with a 1-butene conversion of more than 95% less than 5% of the present isobutene is reacted method for separating 1-butene from c-containing hydrocarbon streams by hydroformylation.

[object Object]

The invention relates to a bisphosphite of the formula I where X=a divalent substituted or unsubstituted bisalkylene or bisarylene radical, Y=a divalent substituted or unsubstituted bisarylene or bisalkylene radical, Z=oxygen or NR, and R, R, R, Rare identical or different, substituted or unsubstituted, linked, unlinked or fused aryl or heteroaryl radicals and Ris hydrogen or a substituted or unsubstituted alkyl or aryl radical, a process for preparing it and also the use of this phosphite in catalysis in particular in the catalytic hydroformylation of olefins or organic compounds having C&#x2014;C double bonds.

Bisphosphite ligands for hydroformylation catalyzed by transition metals

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Recklinghausen, Germany

Burkard Kreidler