An Investigation into the Tether Length and Substitution Pattern of Arene-Substituted Complexes for Asymmetric Transfer Hydrogenation of Ketones
摘要:
A series of Ru(II) catalysts were prepared and tested in the asymmetric transfer hydrogenation of ketones. The catalyst containing a "4-carbon" tether gave the fastest rates of ketone reduction. This is due to both increased rate of regeneration of hydride "Ru-H" and increased rate of ketone reduction. Several classes of ketone were reduced in enantiomeric excesses of up to 97%. Substituents on the arene ring of the catalyst influence the reaction rate and enantioselectivity.
Thiophenolato-bridged dinuclear arene ruthenium complexes: a new family of highly cytotoxic anticancer agents
作者:Michaël Gras、Bruno Therrien、Georg Süss-Fink、Olivier Zava、Paul J. Dyson
DOI:10.1039/c0dt00887g
日期:——
[(arene)2Ru2(SPh)3]+, arene being C6H6, p-iPrC6H4Me, C6Me6, C6H5R, where R = (CH2)nOC(O)C6H4-p-O(CH2)6CH3 or (CH2)nOC(O)CHCHC6H4-p-OCH3 and n = 2 or 4, are obtained from the reaction of the corresponding precursor [(arene)RuCl2]2 and thiophenol and isolated as their chloride salts. The complexes have been fully characterised by spectroscopic methods and the solid state structure of [(C6H6)2Ru2(SPh)3]+, crystallised
新阳离子 钌 类型的复合体 [(芳烃)2 Ru 2(SPh)3 ] +,芳烃为C 6 H 6,p - i PrC 6 H 4 Me,C 6 Me 6,C 6 H 5 R,其中R =(CH 2)n OC(O)C 6 H 4 - p -O(CH 2)6 CH 3或(CH 2)n OC(O)CH CHC 6 H 4 - p -OCH 3和n = 2或4,得自相应前体的反应 [(芳烃)RuCl 2 ] 2 和 苯硫酚并分离为其氯化物盐。该配合物已经通过光谱方法充分表征,并且通过单晶X射线衍射建立了结晶为六氟磷酸盐的[(C 6 H 6)2 Ru 2(SPh)3 ] +的固态结构。该复合物对人卵巢癌细胞(细胞系A2780和A2780cisR)具有高度细胞毒性,IC 50值在亚微摩尔范围内。比较而言三羟硫酚化合物[(芳烃)2 Ru 2(S- p -C 6 H 4 OH)3 ] Cl(IC 50值约为10
Medicaments Based on Dinuclear Ruthenium, Osmium and Iron Complexes Comprising Triply Bridging Thiolato, Selenolato, Alkoxo and/or Amido Ligands
申请人:Université de Neuchâtel
公开号:EP2409697A1
公开(公告)日:2012-01-25
The present invention provides new complexes and medicaments based on dinuclear ruthenium, osmium and iron complexes comprising triply bridging thiolato, selenolato, alkoxo and/or amido ligands. The complexes preferably comprise a M2X3 core, in which M is a metal atom selected from Ru, Os and Fe and each one of said three X is independently selected from said bridging ligands, with the proviso that at least one ligand comprises a substituted or unsubstituted phenyl moiety.
本发明提供了基于二核钌、锇和铁配合物的新型配合物和药物,这些配合物包含三桥硫醇配位体、硒醇配位体、烷氧基配位体和/或氨基配位体。这些配合物最好包含一个 M2X3 核心,其中 M 是选自 Ru、Os 和 Fe 的金属原子,上述三个 X 中的每一个都独立地选自上述桥接配体,但至少有一个配体包含取代或未取代的苯基。
Synthesis and Catalytic Applications of an Extended Range of Tethered Ruthenium(II)/η<sup>6</sup>-Arene/Diamine Complexes
作者:Roy Hodgkinson、Václav Jurčík、Antonio Zanotti-Gerosa、Hans Günter Nedden、Andrew Blackaby、Guy J. Clarkson、Martin Wills
DOI:10.1021/om500788t
日期:2014.10.13
A series of novel enantiopure Ru(II) complexes containing a chiral diamine and eta(6)-arene connected by a tethering group have been prepared and were evaluated in the asymmetric reductions of a range of ketones. Changes to the level of steric hindrance and the addition of an electron withdrawing functionality on the sulfonyl group have a significant effect on the reactivity and enantioselectivity of the catalysts.
η6-Arene complexes of ruthenium and osmium with pendant donor functionalities
作者:Thomas Reiner、Markus Waibel、Alexander N. Marziale、Dominik Jantke、Florian J. Kiefer、Thomas F. Fässler、Jörg Eppinger
DOI:10.1016/j.jorganchem.2010.08.008
日期:2010.11
Conversion of 4'-(2,5-dihydrophenyl)butanol or N-trifluoroacetyl-2,5-dihydrobenzylamine with MCl3 center dot nH(2)O (M-Ru, Os) affords the corresponding dimeric eta(6)-arene complexes in good to excellent yields. Under similar reaction conditions, the amine functionalized arene precursor 2,5-dihydrobenzylamine yields the corresponding Ru(II) complex. For osmium, HCl induced oxidation leads to formation of [OsCl6](2-) salts. However, under optimized reaction conditions, conversion of the precursor 2,5-dihydrobenzylamine chloride results in clean formation of eta(6)-arene Os(II) complex. X-ray structures of [(eta(6)-benzyl ammonium)(dmso) RuCl2] and (2,5-dihydrobenzyl ammonium) 4[OsCl6](2)confirm the spectroscopic data. High stability towards air and acid as well as enhanced solubility in water is observed for all eta(6)-arene complexes. (C) 2010 Elsevier B.V. All rights reserved.
MEDICAMENTS BASED ON DINUCLEAR ARENE RUTHENIUM COMPLEXES COMPRISING BRIDGING THIOLATO, SELENOLATO OR ALKOXO LIGANDS