Abstract: The invention relates to Rh, Ru, Co and Ir complexes comprising bidentate diphosphoramidites as ligands and to the use thereof as catalysts for the hydroformylation of olefins. The invention also relates to a process for preparing an aldehyde from an olefin using the complexes or ligands mentioned.

Abstract: Electrochemical process for coupling two phenols of different oxidation potential, and novel biphenols which can be prepared by this electrochemical coupling.

Abstract: The invention relates to a process comprising the following process steps: a) introducing an ether having 3 to 30 carbon atoms; b) adding a phosphine ligand and a compound which comprises Pd, or adding a complex comprising Pd and a phosphine ligand; c) adding an alcohol; d) supplying CO; e) heating the reaction mixture, the ether being reacted for form an ester; where the phosphine ligand is a compound of formula (I) where m and n are each independently 0 or 1; R1, R2, R3, R4 are each independently selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl, —(C3-C20)-heteroaryl; at least one of the R1, R2, R3, R4 radicals is a —(C3-C20)-heteroaryl radical; and R1, R2, R3, R4, if they are —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl or —(C3-C20)-heteroaryl, may each independently be substituted by one or more substituents selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —O—(C1-C12)-alkyl,

Abstract: The invention relates to a process comprising the following process steps: a) introducing a first alcohol, the first alcohol having 2 to 30 carbon atoms; b) adding a phosphine ligand and a compound which comprises Pd, or adding a complex comprising Pd and a phosphine ligand; c) adding a second alcohol; d) supplying CO; e) heating the reaction mixture, the first alcohol reacting with CO and the second alcohol to form an ester; where the phosphine ligand is a compound of formula (I) where m and n are each independently 0 or 1; R1, R2, R3, R4 are each independently selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl, —(C3-C20)-heteroaryl; at least one of the R1, R2, R3, R4 radicals is a —(C3-C20)-heteroaryl radical; and R1, R2, R3, R4, if they are —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl or —(C3-C20)-heteroaryl, may each independently be substituted by one or more substituents selected from —(C1-C12)-alkyl, —(C3-C12)-c

Abstract: The invention relates to a process comprising the process steps of: a) initially charging an ether having from 3 to 30 carbon atoms; b) adding a phosphine ligand and a compound comprising Pd, or adding a comprising Pd and a phosphine ligand; c) feeding in CO; d) heating the reaction mixture, with conversion of the ether; wherein the phosphine ligand is a compound of formula (I) where m and n are each independently 0 or 1; R1, R2, R3, R4 are each independently selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl, —(C3-C20)-heteroaryl; at least one of the R1, R2, R3, R4 radicals is a —(C3-C20)-heteroaryl radical; and R1, R2, R3, R4, if they are —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl or —(C3-C20)-heteroaryl, may each independently be substituted by one or more substituents selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —O—(C1-C12)-alkyl, —O—(C1-C12)-alkyl-(C6-C20)-aryl, —O—(C3-C12)

Abstract: Process comprising the following process steps: a) introducing an ethylenically unsaturated compound; b) adding a ligand-metal complex comprising Pd and a bidentate phosphine ligand, or adding a bidentate phosphine ligand and a compound which comprises Pd; c) adding an alcohol; d) supplying CO; e) heating the reaction mixture, the ethylenically unsaturated compound being reacted to form an ester, where the reaction mixture is admixed with less than 0.1 mol %, based on the amount of substance of the ethylenically unsaturated compound, of Brønsted acids having an acid strength of pKa ?3, characterized in that the phosphine ligand is substituted on at least one phosphorus atom by at least one heteroaryl radical.

Abstract: The invention relates to a method comprising the method steps of: a) initially charging a diene having two conjugated double bonds; b) adding a phosphine ligand and a catalyst precursor selected from palladium dichloride, palladium dibromide, palladium diiodide, palladium(II) acetylacetonate, palladium(II) acetate, bis(dibenzylideneacetone)palladium, bis(acetonitrile)dichloropalladium(II), palladium (cinnamyl) dichloride; c) adding an alcohol; d) feeding in CO; d) heating the reaction mixture, with conversion of the diene to a di- or tricarboxylic ester; wherein the phosphine ligand is a compound according to formula (I) where R1, R2, R3, R4 are selected from —(C1-C12)-alkyl, —(C6-C20)-aryl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C3-C20)-heteroaryl; R5, R6 are selected from —H, —(C1-C12)-alkyl, —(C6-C20)-aryl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C3-C20)-heteroaryl; and R1, R2, R3, R4, R5, R6, in the case that these are —(C1-C12)-alkyl, —(C6-C20)-aryl, —(C3-C12)-cycloalky

Abstract: The invention relates to a process comprising the following process steps: a) introducing an ethylenically unsaturated compound; b) adding a monophosphine ligand and a compound which comprises Pd, or adding a complex comprising Pd and a monophosphine ligand; c) adding an aliphatic alcohol; d) supplying CO; e) heating the reaction mixture, the ethylenically unsaturated compound being reacted to form an ester; where the monophosphine ligand is a compound of formula (I) where R1 is selected from —(C1-C12)-alkyl, —O—(C1-C12)-alkyl, —O—(C6-C20)-aryl, —(C6-C20)-aryl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C3-C20)-heteroaryl; R2 is selected from —(C6-C20)-aryl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C3-C20)-heteroaryl; R3 is —(C3-C20)-heteroaryl; and R1, R2 and R3 may each independently be substituted by one or more substituents selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —O—(C1-C12)-alkyl, —O—(C1-C12)-alkyl-(C6-C20)-aryl, —O—(C3-C12)-cycloalky

Abstract: Compound of formula (I) where R2, R4 are each independently selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —(C6-C20)-aryl; the R1, R3 radicals are each a —(C3-C20)-heteroaryl radical; R1, R3 may each independently be substituted by one or more substituents selected from —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl, —O—(C1-C12)-alkyl, —O—(C1-C12)-alkyl-(C6-C20)-aryl, —O—(C3-C12)-cycloalkyl, —S—(C1-C12)-alkyl, —S—(C3-C12)-cycloalkyl, —COO—(C1-C12)-alkyl, —COO—(C3-C12)-cycloalkyl, —CONH—(C1-C12)-alkyl, —CONH—(C3-C12)-cycloalkyl, —CO—(C1-C12)-alkyl, —CO—(C3-C12)-cycloalkyl, —N—[(C1-C12)-alkyl]2, —(C6-C20)-aryl, —(C6-C20)-aryl-(C1-C12)-alkyl, —(C6-C20)-aryl-O—(C1-C12)-alkyl, —(C3-C20)-heteroaryl, —(C3-C20)-heteroaryl-(C1-C12)-alkyl, —(C3-C20)-heteroaryl-O—(C1-C12)-alkyl, —COOH, —OH, —SO3H, —NH2, halogen; R2, R4, if they are —(C1-C12)-alkyl, —(C3-C12)-cycloalkyl, —(C3-C12)-heterocycloalkyl or —(C6-C20)-aryl, may each independently be substituted by one or

Abstract: Diastereomer mixture comprising diastereomers of the formulae (I.1) and (I.

Abstract: Novel heterocyclic selenophosphites, method for preparation thereof and use thereof as ligand unit for preparing ligands for use in complexes.

Abstract: The invention relates to a process for doubly carbonylating allyl alcohols to the corresponding diesters, wherein a linear or branched allyl alcohol is reacted with a linear or branched alkanol (alcohol) with supply of CO and in the presence of a catalytic system composed of a palladium complex and at least one organic phosphorus ligand and in the presence of a hydrogen halide selected from HCl, HBr and HI.

Abstract: Process with universal usefulness for reducing the chlorine content of organomonophosphites, using two solutions.

Abstract: Novel singly protected 2,2?-dihydroxybiaryls, electrochemical process for preparation of singly protected 2,2?-dihydroxybiaryls.

Abstract: Novel organodiaryl selenoxides and processes for preparation thereof, and use thereof as ligand in complexes.

Abstract: The invention relates to a process for doubly carbonylating allyl ethers to the corresponding diesters, wherein a linear or branched allyl ether is reacted with a linear or branched alkanol (alcohol) with supply of CO and in the presence of a catalytic system composed of a palladium complex and at least one organic phosphorus ligand and in the presence of a hydrogen halide selected from HCl, HBr and HI.

Abstract: Novel 2,2?-diaminobiaryls having two secondary amines and an electrochemical process for preparation thereof.

Abstract: Novel 2,2?-diamino biaryls of formula (I), (II) and (III), wherein R1-R10, R1?-R10?, X1-X3 and X1-X3? are defined in claim 1. The invention also relates to an electrochemical method for the production thereof.

Abstract: Bisphosphites having at least one unsymmetric outer biphenol unit are useful for the hydroformylation of an olefin.

Abstract: Novel 2,2?-diaminobiaryls having one primary and one secondary amine and an electrochemical process for preparation thereof.