Patent application number | Description | Published |
20110021798 | Ruthenium Complexes with (P-P)-Coordinated Ferrocenyldiphosphine Ligands, Process for Preparing Them and Their Use in Homogeneous Catalysis - The invention relates to ruthenium complexes with a chiral ferrocenyldiphosphine ligand, wherein the ruthenium has the oxidation state (+II) and the chiral ferrocenyldiphosphine ligand has bidentate P—P coordination to the ruthenium. The ruthenium complexes are cyclic and with the ferrocenyldiphosphine ligand have an at least eight-membered ring. The ferrocenyldiphosphine ligands are selected from the group consisting of Taniaphos, Taniaphos-OH and Walphos ligands. A process for preparing the Ru complexes is described. The Rn complexes are used as catalysts for homogeneous asymmetric catalysis for preparing organic compounds. | 01-27-2011 |
20110112318 | RUTHENIUM COMPLEXES HAVING (P-P)-COORDINATED DIPHOSPHORUS DONOR LIGANDS AND PROCESSES FOR PREPARING THEM - The invention relates to ruthenium complexes which have a chiral diphosphorus donor ligand and in which the ruthenium has the oxidation state (+11) and the chiral diphosphorus donor ligand has bidentate P—P coordination to the ruthenium. The ruthenium complexes are present in two forms (cationic type A and uncharged type B), are cyclic and have a four- to six-membered ring incorporating the diphosphorus donor ligand. The chiral diphosphorus donor ligands are selected from the group consisting of diphosphines, diphospholanes, diphosphites, diphosphonites and diazaphospholanes. Furthermore, processes for preparing the ruthenium complexes of types A and B, which are based on ligand exchange reactions, are described. The Ru complexes are used as catalysts for homogeneous asymmetric catalysis for preparing organic compounds. | 05-12-2011 |
20110190524 | METHOD FOR PREPARATION OF RUTHENIUM-INDENYLIDENE CARBENE CATALYSTS - The present invention is directed to a method for the preparation of ruthenium indenylidene carbene catalysts of the type (L)(L′)X | 08-04-2011 |
20120101279 | METHOD FOR PREPARATION OF RUTHENIUM-BASED METATHESIS CATALYSTS WITH CHELATING ALKYLIDENE LIGANDS - The invention relates to a method for preparation of ruthenium-based carbene catalysts with a chelating alkylidene ligand (“Hoveyda-type catalysts”) by reacting a penta-coordinated ruthenium (II)-alkylidene complex of the type (L) (Py)X | 04-26-2012 |
20120277456 | PROCESS FOR PREPARING RUTHENIUM(0)-OLEFIN COMPLEXES - The present invention relates to a process for preparing ruthenium(0)-olefin complexes of the (arene)(diene)Ru(0) type by reacting a ruthenium starting compound of the formula Ru(+II)(X) | 11-01-2012 |
20140256974 | PROCESS FOR PREPARING TRIALKYLGALLIUM COMPOUNDS - The invention relates to a process for preparing trialkylgallium compounds of the general formula R | 09-11-2014 |
20140287141 | Process for Preparing Trialkyl Compounds of Metals of Group IIIA - The invention relates to a process for preparing trialkylmetal compounds of the general formula R | 09-25-2014 |
20140371462 | METHOD FOR PREPARATION OF RUTHENIUM-BASED METATHESIS CATALYSTS WITH CHELATING ALKYLIDENE LIGANDS - The invention relates to a method for preparation of ruthenium-based carbene catalysts with a chelating alkylidene ligand (“Hoveyda-type catalysts”) by reacting a penta coordinated ruthenium (II)-alkylidene complex of the type (1) (Py)X1X2Ru(alkylidene) with a suitable olefin derivative in a cross metathesis reaction. The method delivers high yields and is conducted preferably in aromatic hydrocarbon solvents. The use of phosphine-containing Ru carbene complexes as starting materials can be avoided. Catalyst products with high purity, particularly with low Cu content, can be obtained. | 12-18-2014 |