scholarly journals Ruthenium(II) complexes bearing (NNN) ligand: catalytic evaluation of different solvent-mediated coordination modes

2018 ◽  
Vol 96 (1) ◽  
pp. 40-43 ◽  
Author(s):  
Sara Pellegrino ◽  
Giorgio Facchetti ◽  
Raffella Gandolfi ◽  
Marco Fusè ◽  
Emanuela Erba ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Functional Groups ◽  
Transfer Hydrogenation ◽  
Tridentate Ligand ◽  
Asymmetric Transfer Hydrogenation ◽  
Coordination Modes ◽  
Aryl Ketones

A new (NNN) tridentate ligand was prepared, and its ability to coordinate ruthenium(II) was evaluated. The presence of different functional groups on the ligand allows bi- or tri-coordinated complexes to be obtained depending on complexation conditions. The catalytic activity of both bidentate and tridentate complexes was studied in asymmetric transfer hydrogenation of different aryl ketones, showing a comparable behavior of the two complexes in terms of efficiency and stereoselectivity.

scholarly journals Design of Iridium N-Heterocyclic Carbene Amino Acid Catalysts for Asymmetric Transfer Hydrogenation of Aryl Ketones

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 671
Author(s):  
Chad M. Bernier ◽  
Joseph S. Merola
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Enantiomeric Excess ◽  
Transfer Hydrogenation ◽  
Acid Catalysts ◽  
Asymmetric Transfer Hydrogenation ◽  
Reaction Conditions ◽  
Chiral Complexes ◽  
Acetophenone Derivatives ◽  
Aryl Ketones

A series of chiral complexes of the form Ir(NHC)2(aa)(H)(X) (NHC = N-heterocyclic carbene, aa = chelated amino acid, X = halide) was synthesized by oxidative addition of -amino acids to iridium(I) bis-NHC compounds and screened for asymmetric transfer hydrogenation of ketones. Following optimization of the reaction conditions, NHC, and amino acid ligands, high enantioselectivity was achieved when employing the Ir(IMe)2(l-Pro)(H)(I) catalyst (IMe = 1,3-dimethylimidazol-2-ylidene), which asymmetrically reduces a range of acetophenone derivatives in up to 95% enantiomeric excess.

ChemInform Abstract: 8-Amino-5,6,7,8-tetrahydroquinolines as Ligands in Iridium(III) Catalysts for the Reduction of Aryl Ketones by Asymmetric Transfer Hydrogenation (ATH).

ChemInform ◽  
2015 ◽  
Vol 46 (4) ◽  
pp. no-no
Author(s):  
Daniele Zerla ◽  
Giorgio Facchetti ◽  
Marco Fuse ◽  
Michela Pellizzoni ◽  
Carlo Castellano ◽  
...  
Keyword(s):  
Transfer Hydrogenation ◽  
Asymmetric Transfer Hydrogenation ◽  
Aryl Ketones

Artificial metalloenzymes derived from bovine β-lactoglobulin for the asymmetric transfer hydrogenation of an aryl ketone – synthesis, characterization and catalytic activity

2014 ◽  
Vol 43 (14) ◽  
pp. 5482-5489 ◽  
Author(s):  
Alice Chevalley ◽  
Mickael V. Cherrier ◽  
Juan C. Fontecilla-Camps ◽  
Mahsa Ghasemi ◽  
Michèle Salmain
Keyword(s):  
Catalytic Activity ◽  
Fatty Acid ◽  
Transfer Hydrogenation ◽  
Asymmetric Transfer Hydrogenation ◽  
P Protein ◽  
Artificial Metalloenzymes ◽  
Diimine Complexes ◽  
Β Lactoglobulin ◽  
Aryl Ketone

Protein hybrids resulting from the supramolecular anchoring to bovine β-lactoglobulin of fatty acid-derived Rh(iii) diimine complexes catalysed the asymmetric transfer hydrogenation of trifluoroacetophenone with up to 32% ee.

The origin of different driving forces between O–H/N–H functional groups in metal ligand cooperation: mechanistic insight into Mn(i) catalysed transfer hydrogenation

2020 ◽  
Vol 10 (1) ◽  
pp. 169-179 ◽  
Author(s):  
Li Zhou ◽  
Datai Liu ◽  
Haiyi Lan ◽  
Xiujian Wang ◽  
Cunyuan Zhao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Functional Groups ◽  
Driving Forces ◽  
Transfer Hydrogenation ◽  
Bifunctional Catalysts ◽  
Mechanistic Insight ◽  
Insight Into ◽  
Metal Ligand

The origin of different catalytic activity between two structurally similar Lewis basic bifunctional catalysts.

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