Abstract:
The invention relates to bidentate organophosphorous ferrocenyl ligands containing ligands of formula (I), to their complex compounds and to their utilization in catalytic processes.
Abstract:
The present invention relates to a process for the hydrogenation of an imines with hydrogen in the presence of iridium catalysts. In particular, the present invention relates to a process for the hydrogenation of imines with hydrogen under elevated pressure in the presence of an iridium catalyst and with or without an inert solvent, wherein the reaction mixture comprises a phosphonium chloride, bromide or iodide in the presence of an acid, which can be an organic or inorganic acid soluble or insoluble in the reaction mixture. Suitable imines are especially those that contain at least one group. If the groups are substituted asymetrically and are thus compounds having a prochiral ketitine group, it is possible in the process according to the invention for mixtures of optical isomers or pure optical isomers to be formed if enantioselective or diastereoselective iridium catatalysts are used.
Abstract:
The present invention relates to novel nitrogen—containing monodentate phosphane ligands of formula (I) and to their use in catalytic reactions, especially in the improvement of haloaromatic compounds.
Abstract:
Chiral, unsymmetrical bidentate organophosphorus ligands of the formula (I) are reacted with transition metal centers to form complexes with catalytic activity. The compounds contain chiral bicycloaliphatic skeletons. Synthesis of the bidentate ligands proceeds from norbornyl derivatives.
Abstract:
The present invention is directed to a process for preparing compounds of the general formula (I). Compounds of the general formula (I) are advantageous precursors for preparing phospholane catalysts, especially bisphospholane catalysts. The invention therefore likewise provides for the use of the substances in question for preparing these catalysts.
Abstract:
The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.
Abstract:
The invention relates to ferrocenyl ligands of general formula (II), the Sfc,S-enantiomer or the Rfc,R-enantiomer of the ferrocenyl ligands of formula (II) being enriched, and a method for producing such ligands.
Abstract:
The present invention is directed to P-functionalized amines of nitrogen-containing compounds and to catalysts prepared by combining these amines with transition metals. The catalysts are especially useful for refining haloaromatics.
Abstract:
The invention relates to bidentate organophosphorous ferrocenyl ligands containing ligands of formula (I), to their complex compounds and to their utilization in catalytic processes.
Abstract:
The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.