Basf Aktiengesellschaft

Basf Se Corporation

Michael Slany

Michael Röper

Martin Schäfer

Michael Schulz

Joachim Queisser

Martin Sch&auml;fer

Markus Schmid

Edgar Zeller

Xavier Sava

Ekkehard Lindner

Jörn Karl

Peter Wegner

Joachim Wald

Klaus Ebel

Ekkehard Schwab

Gerd Kaibel

Peter Zehner

Arthur Hohn

Christoph Adami

Wolfgang Ahlers

Michael Gepr&auml;gs

Gerrit A Luinstra

Michael R&ouml;per

Andreas Walch

Klaus-Peter Pfaff

Lucia Koenigsmann

Michael Geprägs

Martin Kamasz

Guenther Gottwald

Günther Gottwald

Juergen Schubert

Günther Grimm

Ansgar Sch&auml;fer

Jürgen Schubert

Lucia KÖNIGSMANN

The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.

Method for producing cis-rose oxide

A process for preparing thermoplastic poly(3-hydroxyalkanoates) with a molar mass greater than 6 000 g/mol and a melting point in the range from 70 to 170&#xb0; C., by reacting an oxirane compound with carbon monoxide in the presence of a transition metal catalyst which has rhodium(0), nickel(0), iron(0), cobalt(0) or palladium(0) as central metal and has been chelated with neutral Lewis bases, and also in the presence of diisocyanates, ortho esters, acetals, anhydrides, PO, MgO, MgCl, MgSO, zeolites, or a mixture of these, at a pressure in the range from 1 to 250 bar and at from room temperature to 150&#xb0; C.

Method for the production of thermoplastic poly(3-hydroxyalkanoates)

A compound of formula (I) suitable as a catalyst or for the preparation of a catalyst system:L-X-L&#x2003;&#x2003;(I)is provided, in which X is a lower alkylene group, an arylene group or an alkarylene group; Lis in which Yis oxygen, sulfur or N&#x2014;R, R, R, R, R, R, Rand Rindependently of one another being hydrogen, alkyl or aryl; and Lis in which Yis oxygen, sulfur or N&#x2014;R, R, R, R, R, R, Rand Rindependently of one another being hydrogen, alkyl or aryl, it being possible for Land Lto be identical or different.

Compound suitable for use as a catalyst or for producing a catalyst system derived from a bis-phosphorinane

A system comprising a diphosphine of the formulaR&#x3e;P&#x2014;(CH)&#x2014;PRRwhereRis a divalent radical which together with the phosphorus atom to which it is linked forms an unsubstituted or substituted 2-phosphatricyclo[3.3.1.1{3,7}]decyl group or a derivative thereof in which one or more of the carbon atoms are replaced by heteroatoms,R, Rare each, independently of one another, a monovalent radical having from 1 to 20 atoms or together form a divalent radical having from 2 to 20 atoms,n is 4 or 5,and a mixture of such diphosphines,and palladium or a palladium compound is suitable as carbonylation catalyst for the carbonylation of a conjugated diene.

Diphosphine

The invention relates to a process for the preparation of methyl formate by reacting methanol with carbon monoxide at a pressure of from 0.5 to 10 MPa abs. and a temperature of from 50 to 150&#xb0; C. in the presence of a metal alkoxide as catalyst in a reactor, in which a gas stream is withdrawn from the reactor, entrained methyl formate is removed from this gas stream by condensation, and all or some of the remaining gas stream is returned to the reactor as circulating-gas stream and a mean gas superficial velocity of from 1 to 20 cm/s is set in at least one region of the reactor in which the gas flows essentially in one direction.

Method for producing methyl formate

The invention relates to a catalyst system for carbonylating olefinically or acetylenically unsaturated compounds with carbon monoxide and a nucleophile compound, containing (a) palladium; (b) a phosphine and (c) a polymer containing nitrogen which is soluble in the reaction mixture, with the exception of polyvinyl polymers with aromatic radicals containing nitrogen on the polymer chain. The invention also relates to a method for carbonylation in the presence of one such catalyst system.

Catalyst system and method for carbonylation

A process is described for preparing acid formates in which methyl formate is reacted with water and a basic compound having a pKof the conjugate acid of the corresponding dissociation state of &#x2267;3 measured at 25&#xb0; C. in aqueous solution, the methanol formed is separated off and, optionally, the desired acid content is set by adding formic acid.

Preparation for production of formic acid formates

Catalyst systems for the copolymerization of carbon monoxide and &#x3b1;-olefinically unsaturated compounds contain, as essential components,

Catalyst systems based on transition metal complexes for carbon monoxide copolymerization in an aqueous medium

Process for the carbonylation of n-pentenoic acid or its derivatives of the formula (I)CH&#x2014;R&#x2003;&#x2003;(I)where Ris &#x2014;CN or COORwhere Ris hydrogen, alkyl or aryl by reaction of a compound of the formula (I) with carbon monoxide and a compound (II) containing a hydroxyl group in the presence of a catalyst system, wherein the catalyst system is obtainable by reaction of

Method for the carbonylation of pentenoic acid and its derivatives thereof

Process for the preparation of aldehydes

Preparation of dialkyl ketones

Water-soluble transition metal complexes

Cis-bridged metal complexes and catalyst systems containing the same

The process comprises reacting 2-, 3- or 4-pentenenitrile or mixtures thereof with carbon monoxide and a hydroxyl compound in the presence of a catalyst system comprising (i) a palladium(II) compound, (ii) a bidentate diphosphine ligand and (iii) an anion source. Novel catalyst systems containing diphosphine ligands of the bis(phosphinomethyl)amine type are also described.

Method for producing cyanovaleric acid or esters thereof

Process for preparing compounds of the formula I

Process for preparing hydantoins or cyclic anhydrides of an amino acid

Growing community of inventors

Kirchheim, Germany

Michael Slany