Hoechst Aktiengesellschaft

Christian Kohlpaintner

Helmut Bahrmann

Wolfgang Anton Herrmann

Andreas Winter

Walter Spaleck

Bernd Bachmann

Michael Aulbach

Robert Klein

Rainer Manetsberger

Frank K Uber

Klaus K Uhlein

Peter Lappe

Frank Kuber

Klaus Kuhlein

Matthias Beller

Ahmed M Tafesh

Werner Konkol

Christoph Naumann

Wolfgang Herrman

The present invention relates to a process for preparing aromatic amines by reacting an aromatic nitro compound with carbon monoxide in a solvent mixture comprising water and a water-insoluble organic solvent by means of a catalyst comprising palladium and a water-soluble phosphine under a pressure of from 5 to 300 bar and at a temperature of from 50 to 200.degree. C., and separating the aqueous phase and the organic phase.

Process for preparing aromatic amines

The present invention relates to a metallocene compound of the formula I ##STR1## which can advantageously be used as catalyst component for olefin polymerization.

Olefin polymerization process by using a substituted indenyl containing

The invention relates to palladium compounds containing as ligands compounds of the formula (I) ##STR1## where Ar is C.sub.6 H.sub.4 SO.sub.3 M, M is hydrogen, ammonium, a monovalent metal or one equivalent of a polyvalent metal and Ph is the phenyl radical and n, m are zero, 1 or 2 and x, y, u, v are zero, 1 or 2.

Palladium catalysts containing sulfonated bisphosphines as ligands,

The invention relates to a metallocene compound of the formula I ##STR1## where the two indenyl ligands have substitution patterns different from one another. The metallocene compound can be used as catalyst component for olefin polymerization.

Process for preparing olefin polymer with catalyst containing metallocene

Metallocene-based catalysts

Sulfonated diphosphines of the formula ##STR1## in which Ar is m--C.sub.6 H.sub.4 --SO.sub.3 M, M is hydrogen, ammonium, a monovalent metal, or the chemical equivalent of a polyvalent metal; Ph is phenyl; the m's are individually 1 or 2, and the n's are individually 0, 1, or 2. A method of their preparation and the hydroformylation of olefins and olefinically unsaturated compounds using these compounds as a constituent of water-soluble catalyst systems are also disclosed.

Sulfonated 2,2'-bis (Diphenylphosphinomethyl)-1,1'-binaphthalenes,

Metallocene compound

Sulfonated diphosphines of the formula ##STR1## in which Ar is m-C.sub.6 H.sub.4 -SO.sub.3 M, M is hydrogen, ammonium, a monovalent metal, or the chemical equivalent of a polyvalent metal; Ph is phenyl; the m's are individually 1 or 2, and the n's are individually 0, 1, or 2. A method of their preparation and the hydroformylation of olefins and olefinically unsaturated compounds using these compounds as a constituent of water-soluble catalyst systems are also disclosed.

Sulfonated 2,2'-bis (diphenylphosphinomethyl)-1,1'-binaphthalenes,

A process for regenerating a water-soluble hydroformylation catalyst system comprising a coupler rhodium hydrogen-carbonyl complex of rhodium and compounds of the formula ##STR1## wherein Ar.sup.1 and Ar.sup.2 and Ar.sup.3 are individually phenyl or naphthyl, Y.sup.1, Y.sup.2 and Y.sup.3 are individually selected from the group consisting of alkyl and alkoxy of 1 to 4 carbon atoms, halogen, --OH, --CN, --NO.sub.2 and R.sup.1 R.sup.2 N--, R.sup.1 and R.sup.2 are individually alkyl of 1 to 4 carbon atoms, X.sup.1, X.sup.2 and X.sup.3 are individually carboxylate (--COO.sup.-) or sulfonate (--SO.sub.3.sup.-), m.sub.1, m.sub.2 and m.sub.3 are individually integers of 0 to 3, at least one of m.sub.1, m.sub.2 or m.sub.3 being equal to or greater than 1, and n.sub.1, n.sub.2 and n.sub.3 are individually integers of 0 to 5 and if appropriate in excess comprising adding maleic acid, fumaric acid or olefinically unsaturated compounds of formula ##STR2## wherein X is selected from the group consisting of O, S, -- ##STR3## or ##STR4## and R.sup.3, R.sup.4 and R.sup.5 are individually hydrogen, or alkyl or aryl to an aqueous solution of the catalyst system in an amount sufficient to remove sulfonated or carboxylated alkyl-arylphosphanes.

Reactivation of water-soluble hydroformylation catalysts

Sulfonated diphosphines of the formula ##STR1## in which Ar is m-C.sub.6 H.sub.4 --SO.sub.3 M, M is hydrogen, ammonium, a monovalent metal, or the chemical equivalent of a polyvalent metal; Ph is phenyl; the m's are individually 1 or 2, and the n's are individually 0, 1, or 2. A method of their preparation and the hydroformylation of olefins and olefinically unsaturated compounds using these compounds as a constituent of water-soluble catalyst systems are also disclosed.

The chemical compound 3,4-dimethyl-2,5,6-tris(p-sulfonatophenyl)-1-phosphanorbernadiene, a process for the preparation thereof and a process for the hydroformylation of olefinically unsaturated compounds with the use of catalysts which contain the aforementioned chemical compound.

3,4-dimethyl-2,5,6-tris(p-sulfonatophenyl)-1-phosphanorbornadiene,

The preparation of water-soluble diphosphines derived from biaryl compounds by reaction with a solution of SO.sub.3 in sulfuric acid.

Water-soluble sulfonated diphosphines

The hydroformylation of olefins and olefinically unsaturated compounds in the presence of a water-soluble rhodium complex compound Which contains, as a ligand, at least one sulfonated diphosphine, and a catalyst therefor.

Process for producing aldehydes

The hydroformylation of olefins and olefinically unsaturated compounds in the presence of a water-soluble rhodium complex compound which contains, as a ligand, at least one sulfonated diphosphine, and a catalyst therefor.

Growing community of inventors

Stephanskirchen, Germany

Christian Kohlpaintner