Basf Aktiengesellschaft

Basf Se Corporation

Massachusetts Institute of Technology

Thomas Mackewitz

Rocco Paciello

Martin Volland

Bernhard Breit

Wolfgang Ahlers

Rainer Papp

Wolfgang Seiche

Frank Rosowski

Andreas Tenten

Michael Röper

Michael R&ouml;per

Christoph Jäkel

Martine Weis

Ansgar Schäfer

Christoph Waloch

Klaus Ebel

Konrad Knoll

Stephen L Buchwald

Hartwig Voss

Oliver Bey

Sven Crone

Stefan Bitterlich

Wolfgang Richter

Frank Haese

Edgar Zeller

Marcus Sigl

Frank Poplow

Frank Heimann

Xavier Sava

Dag Wiebelhaus

Jürgen Stephan

Oliver Löber

Robert A Singer

Joseph P Sadighi

Thomas Heldemann

Volker Böhm

Christoph Obler

The present invention relates to a process for preparing hydroformylation products of olefins having at least four carbon atoms, in which a high proportion of both the linear C-olefins having a terminal double bond comprised in the olefin-comprising feed used and of the linear C-olefins having an internal double bond is converted into hydroformylation products. Furthermore, the invention relates to a process for preparing 2-propylheptanol which comprises such a hydroformylation process.

Method for the hydroformylation of olefins

A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene, in, in a main reactor, a gaseous mixture of o-xylene and an oxygenous gas is passed through at least two reaction zones whose temperature can be controlled independently, and converted to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, and the intermediate reaction product is introduced into a postreactor, wherein the temperature of the reaction zones in the main reactor is regulated in such a way that the concentration of unconverted o-xylene in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.

Preparation of phthalic anhydride by gas phase oxidation of o-xylene

The present invention relates to a process for the hydroformylation of ethylenically unsaturated compounds by reaction with carbon monoxide and hydrogen in the presence of a catalytically active fluid which comprises a dissolved metal complex of a metal of transition group VIII of the Periodic Table of the Elements with at least one phosphoramidite compound as ligand, wherein the fluid is brought into contact with a base.

Stabilization of hydroformylation catalysts based on phosphoramide ligands

A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene, in which a gaseous mixture of o-xylene and an oxygenous gas is converted in a main reactor to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, the heat of reaction which arises in the main reactor being removed at least partly by indirect cooling with a heat carrier medium, and the intermediate reaction product being introduced into a postreactor. The concentration of unconverted o-xylene in the intermediate reaction product is at least 1% by weight, and the sum of the concentrations of phthalic anhydride underoxidation products in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.

Preparation of phthalic anhydride by gas phase oxidation of O-xylene in a main reactor and postreactor

The present invention relates to a process for asymmetric synthesis in the presence of a chiral catalyst comprising at least one complex of a metal of transition group VIII with ligands capable of dimerization via noncovalent bonds, such catalysts and their use.

Method for asymmetric synthesis

The invention relates to a method for the continuous production of aldehydes by the isomerising hydroformylation in a homogenous phase of olefin compositions by means of a synthesis gas, in the presence of a homogeneous rhodium catalyst that is complexed with an organophosphorus ligand containing oxygen atoms and/or nitrogen atoms and a free ligand. The production is carried out at high temperature and high pressure in a multi-stage reaction system consisting of at least two reaction zones. According to the method, the olefin composition is first reacted in a first reaction zone or a group of several first reaction zones at a total pressure of between 10 and 40 bar, using a synthesis gas with a CO/Hmolar ratio of between 4:1 and 1:2 until a 40 to 95% conversion of the &#x3b1;-olefins is obtained.

Method for the continuous production of aldehydes

The invention relates to a method for producing dialdehydes and/or ethylenically unsaturated monoaldehydes by reacting at least one compound with at least two ethylenically unsaturated double bonds with carbon monoxide and hydrogen in the presence of a hydroformylating catalyst with at least one complex of a metal of subgroup VIII. The subgroup comprises at least pnicogen chelate ligands.

Method for producing dialdehydes and or ethylenically unsaturated monoaldehydes by hydroformylating ethylenically unsaturated compounds

The present invention relates to a process for hydroformylating in the presence of a catalyst comprising at least one complex of a metal of transition group VIII with mono-phosphorus compounds which are capable of dimerizing via noncovalent bonds as ligands, to such catalysts and to their use.

Hydroformylation

The invention relates to phosphacyclohexanes of general formulae I and II, wherein the following designations, among others, apply: R can represent hydrogen, C-alkyl, C-aralkyl, C-alkaryl, and C-aryl: Rto Rcan independently represent hydrogen, C-alkyl, C-aralkyl, C-alkaryl, and C-aryl: W, W' can independently represent single bonds or bridges comprising 1 to 20 carbon atoms, which can form part of a cyclic or aromatic group and can be interrupted by heteroatoms. Said phosphacyclohexanes are used as ligands in transition metal complexes of transition metals belonging to groups VIII to X of the periodic table.

Phosphacyclohexanes and the use thereof in the hydroformylation of olefins

In a process for the hydroformylation of ethylenically unsaturated compounds, at least one complex or compound of a metal of transition group VIII with at least one bidentate phosphine ligand is used as hydroformylation catalyst and at least one of the reaction steps following the hydroformylation reaction is carried out essentially in the absence of carbon monoxide and hydrogen and in the presence of at least one monodentate phosphine ligand.

Phosphabenzene compounds and their use in hydroformylation

Phosphabenzene compounds of the formulae I and II

Preparation of phosphabenzene compounds

The transition metal-catalyzed amination of aryl halides, in conjunction with an orthogonal protective group scheme, forms the basis of two routes to oligoaniline precursors. The oligoaniline precursors are soluble in a variety of common organic solvents, and are easily converted to the deprotected oligoanilines. The method allows the preparation of oligoanilines of even or odd chain lengths, and the incorporation of a variety of functional groups into the oligomers. Polyanilines of low polydispersity can also be prepared by this method.

Synthesis of oligoarylamines, and uses and reagents related thereto

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Römerberg, Germany

Thomas Mackewitz