摘要:
The invention claims chiral di- and triphosphites of general formulas (I) or (II), which are bridged by suitable groups. The claimed compounds can be used in asymmetric transition metal catalysis and as chiral transition metal catalysts.
摘要:
A process is described for preparing aromatic and heteroaromatic amines of the general formula (I) Ar—NR1R2, in which an aromatic compound with the general formula (II) Ar—X is reacted in the presence of a catalyst with an amine of the general formula (III) H—NR1R2 and a base, wherein the catalyst is selected from transition metal complexes having one or more ligands with the general formula (IV).
摘要:
A process is described for preparing aromatic and heteroaromatic amines of the general formula (I) Ar—NR1R2, in which an aromatic compound with the general formula (II) Ar—X is reacted in the presence of a catalyst with an amine of the general formula (III) H—NR1R2 and a base, wherein the catalyst is selected from transition metal complexes having one or more ligands with the general formula (IV).
摘要:
The invention relates to certain chiral transition metal catalysts, to the metal of which at least two structurally different monophosphorus ligands are bonded, at least one of said monophosphorus ligands being chiral. Said chiral transition metal catalysts are suitable as catalysts for use in asymmetric transition metal-catalyzed reactions, providing better enantioselectivities than in cases where only one structurally defined ligand is used.
摘要:
Certain chiral monophosphites and their monothio derivatives are suitable as ligands in the asymmetrical transition-metal-catalyzed hydrogenation, hydroborination and hydrocyanation of prochiral olefins, ketones and imines.
摘要:
The invention relates to certain chiral transition metal catalysts, to the metal of which at least two structurally different monophosphorus ligands are bonded, at least one of said monophosphorus ligands being chiral. Said chiral transition metal catalysts are suitable as catalysts for use in asymmetric transition metal-catalyzed reactions, providing better enantioselectivities than in cases where only one structurally defined ligand is used.
摘要:
Phosphoramidites with the general formulae I to VI are claimed together with the use of these compounds as ligands of transition metal compounds, in particular in transition metal catalysts, in the hydrogenation, transfer hydrogenation, hydroboration, hydrocyanation, 1,4-addition, hydroformylation, hydrosilylation, hydrovinylation, and Heck reactions of prochiral olefins, ketones, or ketimines.