Pd(II)‐NNN Pincer Complexes for Catalyzing Transfer Hydrogenation of Ketones

2020 ◽  
Vol 5 (43) ◽  
pp. 13591-13597
Author(s):  
Peter Jerome ◽  
Jebiti Haribabu ◽  
Nattamai S. P. Bhuvanesh ◽  
Ramasamy Karvembu
Keyword(s):  
Transfer Hydrogenation ◽  
Pincer Complexes

scholarly journals Computational Design of SCS Nickel Pincer Complexes for the Asymmetric Transfer Hydrogenation of 1-Acetonaphthone

Catalysts ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 101 ◽  
Author(s):  
Bing Qiu ◽  
Wan Wang ◽  
Xinzheng Yang
Keyword(s):  
Density Functional ◽  
Enantiomeric Excess ◽  
Density Functional Theory Calculations ◽  
Computational Design ◽  
Transfer Hydrogenation ◽  
Pincer Complexes ◽  
Free Energy Barrier ◽  
Asymmetric Transfer Hydrogenation ◽  
Functional Theory ◽  
Prochiral Ketones

Inspired by the active site structures of lactate racemase and recently reported sulphur–carbon–sulphur (SCS) nickel pincer complexes, a series of scorpion-like SCS nickel pincer complexes with an imidazole tail and asymmetric claws was proposed and examined computationally as potential catalysts for the asymmetric transfer hydrogenation of 1-acetonaphthone. Density functional theory calculations reveal a proton-coupled hydride transfer mechanism for the dehydrogenation of (R)-(+)-1-phenyl-ethanol and the hydrogenation of 1-acetonaphthone to produce (R)-(+)-1-(2-naphthyl)ethanol and (S)-(−)-1-(2-naphthyl)ethanol. Among all proposed Ni complexes, 1Ph is the most active one with a rather low free energy barrier of 24 kcal/mol and high enantioselectivity of near 99% enantiomeric excess (ee) for the hydrogenation of prochiral ketones to chiral alcohols.

Ruthenium(II) pincer complexes with oxazoline arms for efficient transfer hydrogenation reactions

2012 ◽  
Vol 53 (33) ◽  
pp. 4409-4412 ◽  
Author(s):  
Tao Chen ◽  
Li-Peng He ◽  
Dirong Gong ◽  
Limin Yang ◽  
Xiaohe Miao ◽  
...  
Keyword(s):  
Transfer Hydrogenation ◽  
Pincer Complexes ◽  
Hydrogenation Reactions ◽  
Efficient Transfer

Rhodium(III) NCN pincer complexes catalyzed transfer hydrogenation of ketones

2009 ◽  
Vol 50 (50) ◽  
pp. 7014-7017 ◽  
Author(s):  
Mathiyazhagan Ulaganatha Raja ◽  
Rengan Ramesh ◽  
Kyo Han Ahn
Keyword(s):  
Transfer Hydrogenation ◽  
Pincer Complexes

Molecularly Defined Manganese Pincer Complexes for Selective Transfer Hydrogenation of Ketones

ChemSusChem ◽  
2016 ◽  
Vol 10 (1) ◽  
pp. 83-86 ◽  
Author(s):  
Marc Perez ◽  
Saravanakumar Elangovan ◽  
Anke Spannenberg ◽  
Kathrin Junge ◽  
Matthias Beller
Keyword(s):  
Transfer Hydrogenation ◽  
Pincer Complexes ◽  
Selective Transfer

scholarly journals Base-Free Synthesis of Furfurylamines from Biomass Furans Using Ru Pincer Complexes

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 558
Author(s):  
Danielle Pinheiro ◽  
Martin Nielsen
Keyword(s):  
Reductive Amination ◽  
Transfer Hydrogenation ◽  
Pincer Complexes

We report the first example of employing homogeneous organometal-catalyzed transfer hydrogenation for the selective reductive amination of furfurals to furfurylamines. An efficient, chemoselective, and base-free method is described using Ru-MACHO-BH as catalyst and iPrOH as H donor. The method tolerates a range of substituents affording moderate to excellent yields.

ChemInform Abstract: Rhodium(III) NCN Pincer Complexes Catalyzed Transfer Hydrogenation of Ketones.

ChemInform ◽  
2010 ◽  
Vol 41 (12) ◽  
Author(s):  
Mathiyazhagan Ulaganatha Raja ◽  
Rengan Ramesh ◽  
Kyo Han Ahn
Keyword(s):  
Transfer Hydrogenation ◽  
Pincer Complexes

Chemoselective Transfer Hydrogenation of Aldehydes with HCOONH4Catalyzed by RuCl(CNNPh)(PP) Pincer Complexes

ChemCatChem ◽  
2016 ◽  
Vol 8 (20) ◽  
pp. 3195-3198 ◽  
Author(s):  
Salvatore Baldino ◽  
Sarah Facchetti ◽  
Hans Günter Nedden ◽  
Antonio Zanotti-Gerosa ◽  
Walter Baratta
Keyword(s):  
Transfer Hydrogenation ◽  
Pincer Complexes

scholarly journals Ruthenacycles and Iridacycles as Transfer Hydrogenation Catalysts

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4076
Author(s):  
Vincent Ritleng ◽  
Johannes G. de Vries
Keyword(s):  
Hydrogen Transfer ◽  
Transfer Hydrogenation ◽  
Transfer Reactions ◽  
Secondary Amines ◽  
Pincer Complexes ◽  
Oxidation Reactions ◽  
Asymmetric Transfer Hydrogenation ◽  
Hydrogenation Catalysts ◽  
Oppenauer Oxidation ◽  
Sigma Bond

In this review, we describe the synthesis and use in hydrogen transfer reactions of ruthenacycles and iridacycles. The review limits itself to metallacycles where a ligand is bound in bidentate fashion to either ruthenium or iridium via a carbon–metal sigma bond, as well as a dative bond from a heteroatom or an N-heterocyclic carbene. Pincer complexes fall outside the scope. Described are applications in (asymmetric) transfer hydrogenation of aldehydes, ketones, and imines, as well as reductive aminations. Oxidation reactions, i.e., classical Oppenauer oxidation, which is the reverse of transfer hydrogenation, as well as dehydrogenations and oxidations with oxygen, are described. Racemizations of alcohols and secondary amines are also catalyzed by ruthenacycles and iridacycles.

scholarly journals Mn(i) phosphine-amino-phosphinites: a highly modular class of pincer complexes for enantioselective transfer hydrogenation of aryl-alkyl ketones

2021 ◽  
Author(s):  
Harikrishnan Jayaprakash
Keyword(s):  
Transfer Hydrogenation ◽  
Pincer Complexes ◽  
Modular Class

Easily accessible, highly modular and novel Mn(i) P′ON(H)P pincer complexes for highly enantioselective (up to 98%) transfer hydrogenation of aryl-alkyl ketones have been developed.

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