Highly Enantioselective Amido Iridium Catalysts for the Hydrogenation of Simple Ketones
作者:Torsten Irrgang、Denise Friedrich、Rhett Kempe
DOI:10.1002/anie.201004665
日期:2011.2.25
New family of cats: Tailormade amidoiridiumcatalysts with simple structures and no P ligands show excellent enantioselectivities and activities in the asymmetric hydrogenation of simpleketones (see scheme; C yellow, N green, O blue, Ir red). These catalysts may thus be the key to ecologically and economically optimized value creation
An intermolecular C–C coupling reaction of iridium complexes
作者:Kathrin Kutlescha、Torsten Irrgang、Rhett Kempe
DOI:10.1039/c0nj00158a
日期:——
followed by a cyclocondensation reaction with 1,3-diketones. After deprotonation, these monoanionic amido-pincer ligands are suitable for the stabilization of mononuclear iridium complexes. For 2-(pyridyl-methyl)-amine-derived complexes, we observed the formation of dimers via an intermolecular C–Ccouplingreaction, whilst the 3-(pyridyl-methyl)amine-derived complex did not react. We propose that enamine
小说 咪唑并[1,5- b ]哒嗪通过卤代恶二唑和(氨甲基)吡啶的亲核环合成,然后与1,3-二酮进行环缩合反应,合成了取代的(吡啶基-甲基)胺。去质子化后,这些单阴离子酰胺基钳配体适用于稳定单核 铱复合体。对于2-(吡啶基甲基)-胺衍生的配合物,我们观察到通过分子间CC偶联反应形成二聚体,而3-(吡啶基甲基)-胺衍生的配合物没有反应。我们建议烯胺互变异构在C–C偶联反应中起重要作用。
IMIDAZOÝ1,5-B¨PYRIDAZIN-AMIDO-LIGANDEN UND DEREN KOMPLEXVERBINDUNGEN
申请人:AIKAA-Chemicals-GmbH
公开号:EP2099801B1
公开(公告)日:2010-11-03
[DE] IMIDAZO[1,5-B]PYRIDAZIN-AMIDO-LIGANDEN UND DEREN KOMPLEXVERBINDUNGEN<br/>[EN] IMIDAZO[1,5-B]PYRIDAZINAMIDO LIGANDS AND THEIR COMPLEXES<br/>[FR] LIGANDS IMIDAZO[1,5-B]PYRIDAZINE-AMIDO ET LEURS COMPOSÉS COMPLEXES
申请人:UNIV BAYREUTH
公开号:WO2008061663A1
公开(公告)日:2008-05-29
[EN] The invention relates to novel NN(R) ligands of the formula 1 (imidazo[1,5-b]pyridazine-substituted amino ligands) in uncharged or anionic form and catalysts which can be produced therewith, in particular for asymemtric catalysis, and a process for producing such ligands and catalysts. [FR] L'invention concerne de nouveaux ligands NN(R) de formule 1 (ligands amino à substitution imidazo[1,5-ö]pyridazine) sous forme neutre ou anionique et les catalyseurs pouvant être fabriqués avec ces ligands, notamment pour la catalyse asymétrique, ainsi qu'un procédé de fabrication de tels ligands et catalyseurs. [DE] Die Erfindung betrifft neue NN(R)-Liganden der Formel 1 (lmidazo[1,5-ö]pyridazin-substituierte Amino-Liganden) in neutraler oder anionischer Form und damit herstellbare Katalysatoren, insbesondere zur asymmetrischen Katalyse sowie ein Verfahren zur Herstellung solcher Liganden und Katalysatoren.