Novel Ruthenium Complexes Having Hybrid Amine Ligands, Their Preparation And Use
申请人:Sandoval Christian A.
公开号:US20110092712A1
公开(公告)日:2011-04-21
The invention relates to a novel class of ruthenium complexes containing phosphine and hybrid amine ligands, their preparation and use as catalysts in the reduction of simple ketones to alcohols by molecular hydrogenation. The reactivity and enantioselectivity of such complexes in the asymmetric hydrogenation of simple ketones could be enchanced by the addition of some selective additives.
Combinatorial Approach to Chiral Tris-ligated Carbophilic Platinum Complexes: Application to Asymmetric Catalysis
作者:Alexandre Pradal、Serafino Gladiali、Veronique Michelet、Patrick Y. Toullec
DOI:10.1002/chem.201304794
日期:2014.6.2
the synthesis of libraries of chiral tris‐ligated cationic platinumcomplexes and their in situ evaluation as asymmetriccarbophilic catalysts in a model domino hydroarylation/cyclization reaction of a 1,6‐enyne was developed. A catalyst‐generation process based on a combination of a monodentate and a bidentate phosphorus ligand allowed the formation of 108 chiralcomplexes. One‐pot screening of the stereoinduction
[EN] NOVEL RUTHENIUM COMPLEXES HAVING HYBRID AMINE LIGANDS, THEIR PREPARATION AND USE<br/>[FR] NOUVEAUX COMPLEXES DE RUTHÉNIUM POSSÉDANT DES LIGANDS AMINES HYBRIDES, LEUR PRÉPARATION ET LEUR UTILISATION
申请人:ENANTIOTECH CORP LTD
公开号:WO2009149670A1
公开(公告)日:2009-12-17
The invention relates to a novel class of ruthenium complexes containing phosphine and hybrid amine ligands, their preparation and use as catalysts in the reduction of simple ketones to alcohols by molecular hydrogenation. The reactivity and enantioselectivity of such complexes in the asymmetric hydrogenation of simple ketones could be enchanced by the addition of some selective additives.
Highly Enantioselective Hydroxycarbonylation and Alkoxycarbonylation of Alkenes using Dipalladium Complexes as Precatalysts
作者:Tina M. Konrad、José A. Fuentes、Alexandra M. Z. Slawin、Matthew L. Clarke
DOI:10.1002/anie.201004415
日期:2010.11.22
Joined at Pd: Novel palladium catalysts like 1, in which the planar‐chiral phosphine acts as a bridging ligand, have been developed. These dimetallic complexes are highlyenantioselective catalysts in the hydroxycarbonylation of alkenes, a reaction that has proven problematic over the years. PTSA=para‐toluenesulfonic acid.
NOVEL PROCESS FOR THE SYNTHESIS OF 5-(4-FLUOROPHENYL)-1-[2-((2R,4R)-4-HYDROXY-6-OXO-TETRAHYDRO-PYRAN-2-YL)-ETHYL]-2-ISOPROPYL-4-PHENYL-1H-PYRROLE-3-CARBOXYLIC ACID PHENYLAMIDE
申请人:——
公开号:US20020133026A1
公开(公告)日:2002-09-19
An improved process for the preparation of 5-(4-fluorophenyl)-1-[2-((2R,4R)-4-hydroxy-6-oxo-tetrahydro-pyran-2-yl)-ethyl]-2-isopropyl-4-phenyl-1H-pyrrole-3-carboxylic acid phenylamide by a novel synthesis is described where methyl cyanoacetate is converted in eight operations or fewer to the desired product, as well as other valuable intermediates used in the process.