Chiral phosphonite, phosphite and phosphoramidite η6-arene-ruthenium(ii) complexes: application to the kinetic resolution of allylic alcohols
作者:Mariano A. Fernández-Zúmel、Beatriz Lastra-Barreira、Marcus Scheele、Josefina Díez、Pascale Crochet、José Gimeno
DOI:10.1039/c0dt00140f
日期:——
[RuCl2(η6-arene)(R)-PR(binaphthoxy)}] (arene = benzene (1), p-cymene (2), mesitylene (3); R = Ph (a), OPh (b), piperidyl (c)) are described. Derivatives 1–3 have been employed to promote the kinetic resolution of allylic alcohols through a redox-isomerization process. As a general trend, the best selectivities are attained with the more sterically hindered catalysts i.e. those containing p-cymene or mesitylene ligands
Chiral Phosphorus-Based 1,3-Dipoles: A Modular Approach to Enantioselective 1,3-Dipolar Cycloaddition and Polycyclic 2-Pyrroline Synthesis
作者:Marie S. T. Morin、Bruce A. Arndtsen
DOI:10.1021/ol4035512
日期:2014.2.21
design of a new class of chiral 1,3-dipoles for enantioselective cycloaddition reactions is reported. These phosphorus-based dipoles are easily formed (from imines, acid chlorides, and chiral phosphites), rigidly chiral, and undergo intramolecular alkene cycloaddition with high enantioselectivity. Overall, this provides a straightforward and modular approach to synthesize chiral 2-pyrrolines and pyrrolidines
Screening of a Supramolecular Catalyst Library in the Search for Selective Catalysts for the Asymmetric Hydrogenation of a Difficult Enamide Substrate
作者:Xiao-Bin Jiang、Laurent Lefort、P. Elsbeth Goudriaan、André H. M. de Vries、Piet W. N. M. van Leeuwen、Johannes G. de Vries、Joost N. H. Reek
DOI:10.1002/anie.200503663
日期:2006.2.13
Verfahren zur Herstellung von Phosphiten und Übergangsmetallkomplexen
申请人:Saltigo GmbH
公开号:EP1394168B1
公开(公告)日:2008-05-21
[EN] FERROCENYL PHOSPHITE LIGANDS FOR ASYMMETRIC CATALYSIS AND A METHOD FOR THEIR PRODUCTION<br/>[FR] LIGANDS DE FERROCENYL PHOSPHITE UTILISES POUR REALISER UNE CATALYSE ASYMETRIQUE, ET LEUR PROCEDE DE PRODUCTION
申请人:UNIV NOTTINGHAM
公开号:WO2007036701A1
公开(公告)日:2007-04-05
[EN] The present invention relates to novel ferrocene compounds, their synthesis and their use as catalysts. The compounds of the invention are useful additives in transition metal-promoted transformations of organic molecules such as hydrogenations, additions of organometallic neucleophiles to carbonyl compounds and Michael acceptors. [FR] L'invention concerne de nouveaux composés ferrocène, leur synthèse, et leur utilisation en tant que catalyseurs. Les composés selon l'invention peuvent être utilisés en tant qu'additifs dans des transformations de molécules organiques favorisées par des métaux de transition, par exemple dans des hydrogénations, des additions de nucléophiles organométalliques à des composés carbonyle, et des accepteurs de Michael.