Half-Sandwich Ruthenium Catalyst Bearing an Enantiopure Primary Amine Tethered to an N-Heterocyclic Carbene for Ketone Hydrogenation

ACS Catalysis ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 6827-6842 ◽  
Author(s):  
Kai Y. Wan ◽  
Molly M. H. Sung ◽  
Alan J. Lough ◽  
Robert H. Morris
Keyword(s):  
Primary Amine ◽  
Ruthenium Catalyst ◽  
Ketone Hydrogenation ◽  
Half Sandwich

scholarly journals Role of water in metal catalyst performance for ketone hydrogenation: a joint experimental and theoretical study on levulinic acid conversion into gamma-valerolactone

2014 ◽  
Vol 50 (83) ◽  
pp. 12450-12453 ◽  
Author(s):  
Carine Michel ◽  
Jérémie Zaffran ◽  
Agnieszka M. Ruppert ◽  
Joanna Matras-Michalska ◽  
Marcin Jędrzejczyk ◽  
...  
Keyword(s):  
Levulinic Acid ◽  
Theoretical Study ◽  
Hydrogenation Reaction ◽  
Ruthenium Catalyst ◽  
Metal Catalyst ◽  
Ketone Hydrogenation

Water is essential to attain good performance in a hydrogenation reaction with a ruthenium catalyst.

Catalytic hydrogenation of carbonyl and nitro compounds using an [N,O]-chelate half-sandwich ruthenium catalyst

2019 ◽  
Vol 48 (21) ◽  
pp. 7158-7166 ◽  
Author(s):  
Zi-Jian Yao ◽  
Jing-Wei Zhu ◽  
Nan Lin ◽  
Xin-Chao Qiao ◽  
Wei Deng
Keyword(s):  
Aqueous Solution ◽  
High Activity ◽  
Catalytic Hydrogenation ◽  
Ruthenium Complexes ◽  
Nitro Compounds ◽  
Ruthenium Catalyst ◽  
Half Sandwich

A series of N,O-chelate half-sandwich ruthenium complexes have been synthesized, which exhibited high activity for the catalytic hydrogenation of carbonyl and nitro compounds in aqueous solution.

Regio-, Stereo- and Enantioselective α-Addition of Carbonyl Nucleo-philes to Allenamides Catalyzed by a Synergistic Copper/Enamine System

2020 ◽  
Author(s):  
Rémi Blieck ◽  
Sebastien Lemouzy ◽  
Marc Taillefer ◽  
Florian Monnier
Keyword(s):  
Catalytic System ◽  
Secondary Amine ◽  
Primary Amine ◽  
Synergistic Catalysis ◽  
Enantioselective Addition ◽  
Amine Catalysts

A dual copper/enamine catalytic system is found to enable an intermolecular enantioselective α-addition of various carbonyl nucleophiles to allenamides. Secondary amine catalysts allowed the highly enantioselective addition of aldehydes, while using primary amine catalysts led to the enantioselective addition of ketoester nucleophiles. The process was found to be highly regio-, stereo- and enantio-selective and represented the first allene hydrofunctionalization using an synergistic catalysis involving copper

Half- Sandwich cyclopentadienylruthenium(II) Complexes: A New Antimalarial Chemotype

2020 ◽  
Author(s):  
Sofia Alexandra Milheiro ◽  
Joana Gonçalves ◽  
Ricardo Lopes ◽  
Margarida Madureira ◽  
Lis Lobo ◽  
...  
Keyword(s):  
Mammalian Cells ◽  
Blood Stage ◽  
Nuclear Accumulation ◽  
Selective Absorption ◽  
Asexual Parasite ◽  
Single Digit ◽  
Liver Stage ◽  
Dual Stage ◽  
Fluorescent Compounds ◽  
Half Sandwich

<p><a>A small library of “half-sandwich” cyclopentadienylruthenium(II) compounds of general formula [(</a>η<sup>5</sup>-C<sub>5</sub>R<sub>5</sub>)Ru(PPh<sub>3</sub>)(N-N)][PF<sub>6</sub>], a scaffold hitherto unfeatured in the toolbox of antiplasmodials, was screened for activity against the blood stage of CQ-sensitive 3D7-GFP, CQ-resistant Dd2 and artemisinin-resistant IPC5202 <i>Plasmodium falciparum</i> strains, and the liver stage of <i>P. berghei</i>. The best performing compounds displayed dual-stage activity, with single-digit nM IC<sub>50</sub> values against blood stage malaria parasites, nM activity against liver stage parasites, and residual cytotoxicity against mammalian cells (HepG2, Huh7). Parasitic absorption/distribution of 7-nitrobenzoxadiazole-appended fluorescent compounds <b>Ru4</b> and <b>Ru5</b> was investigated by confocal fluorescence microscopy, revealing parasite-selective absorption in infected erythrocytes and nuclear accumulation of both compounds. The lead compound <b>Ru2</b> impaired asexual parasite differentiation, exhibiting fast parasiticidal activity against both ring and trophozoite stages of a synchronized <i>P. falciparum</i> 3D7 strain. These results point to cyclopentadienylruthenium(II) complexes as a highly promising chemotype for the development of dual-stage antiplasmodials.</p>

Thermally Stable Half-Sandwich Benzhydryl Ln(II) (Ln = Sm, Yb) Complexes Supported by Sterically Demanding Carbazolyl and Fluorenyl Ligands

2019 ◽  
Vol 38 (24) ◽  
pp. 4615-4624 ◽  
Author(s):  
Alexander N. Selikhov ◽  
Andrey S. Shavyrin ◽  
Anton V. Cherkasov ◽  
Georgy K. Fukin ◽  
Alexander A. Trifonov
Keyword(s):  
Thermally Stable ◽  
Sterically Demanding ◽  
Half Sandwich

ChemInform Abstract: Aerobic Oxidative Dehydrogenation of Benzyl Alcohols to Benzaldehydes by Using a Cyclometalated Ruthenium Catalyst.

ChemInform ◽  
2012 ◽  
Vol 43 (43) ◽  
pp. no-no
Author(s):  
Ayako Taketoshi ◽  
Xin Ning Beh ◽  
Junpei Kuwabara ◽  
Take-aki Koizumi ◽  
Takaki Kanbara
Keyword(s):  
Oxidative Dehydrogenation ◽  
Ruthenium Catalyst ◽  
Benzyl Alcohols
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