Abstract:
The present invention concerns novel bidentante optionally N-containing P-ligands of general formula (I) embracing a two-ring-system and processes for synthesizing them, transition metal complexes of these compounds and their use as catalysts.
Abstract:
(Hetero)aromatic are prepared from halogen-substituted (hetero)aromatic compounds in the presence of a base and a palladium catalyst having a nonpyrophoric monodentate phosphane ligand. The phosphane ligand structure includes two radical groups having a tertiary carbon attached directly to phosphorous and one radical group having a primary carbon attached to the phosphorous.
Abstract:
The present invention is directed at a process for preparing enantiomerically enriched compounds of the general formula (I). Compounds of the type shown are employed in catalyst systems.
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 relates to unsymmetric bidendate organophosphorus ligands of the formula (I) which have a modular structure and have a trivalent phosphine function and a second trivalent phosphorus group which is bound via a heteroatom to a chiral ligand framework, R1R2PZC*HR3XP(YR4)(YR5) (I) where X is —O—, —S— or —NR6—, Y is a direct phosphorus-carbon bond, —O— or —NR7—, Z represents 1 to 6 carbon atoms which are joined by single or double bonds and link the phosphine unit PR1R2 to the carbon center C*, and P is trivalent phosphorus. The invention also relates to complexes comprising such a chiral ligand system of the formula (I).
Abstract translation:本发明涉及具有模块化结构并具有三价膦功能的式(I)的不对称的有机磷配体,以及通过杂原子与手性配体骨架结合的第二个三价磷基团,其中X是-O-, -S-或-NR6-,Y是直接的磷 - 碳键,-O-或-NR7-,Z代表1-6个碳原子,其通过单键或双键连接并将磷化氢单元PR1R2连接到碳中心 C *和P是三价磷。本发明还涉及包含式(I)的这种手性配体体系的复合物。
Abstract:
Disclosed herein are phosphine compounds represented by the general formula (4): and corresponding phosphonium salts represented by the general formula (4a): Also disclosed are processes for the preparation of these phosphines and phosphonium salts as well as their use as ligands in catalytic reactions.
Abstract:
The present invention is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalyzed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis.
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 is based on new ligand systems of the general formula (I). These ligand systems can be used advantageously in transition metal-catalysed asymmetric syntheses. Likewise encompassed are the transition metal complexes thus prepared, a process for preparing the ligands and the use of the complexes in asymmetric synthesis.