N-Benzyl Substituted N-Heterocyclic Carbene Complexes of Iridium(I): Assessment in Transfer Hydrogenation Catalyst

2013 ◽  
Vol 52 (18) ◽  
pp. 10601-10609 ◽  
Author(s):  
Süleyman Gülcemal ◽  
Aytaç Gürhan Gökçe ◽  
Bekir Çetinkaya
Keyword(s):  
Transfer Hydrogenation ◽  
Hydrogenation Catalyst ◽  
Carbene Complexes

Transfer Hydrogenation of Carbonyl Compounds and Alkenes Catalyzed by Ruthenium(II)-N-Heterocycle Carbene Complexes

2007 ◽  
Vol 72 (8) ◽  
pp. 1037-1045 ◽  
Author(s):  
Marianna Fekete ◽  
Ferenc Joó
Keyword(s):  
Carbonyl Compounds ◽  
Hydrogen Transfer ◽  
Transfer Hydrogenation ◽  
Unsaturated Alcohol ◽  
Two Phase ◽  
Carbene Complexes ◽  
Saturated Alcohol ◽  
Catalytic Activities ◽  
Saturated Aldehyde ◽  
Phase Mixture

The Ru(II)-N-heterocycle carbene complexes [RuCl2(η6-p-cymene)L] (L = 1-butyl-3-methylimid- azol-2-ylidene) and [RuCl(η6-p-cymene)L(pta)]Cl (pta = 1,3,5-triaza-7-phosphaadamantane) showed excellent catalytic activities (with turnover frequencies up to 1116 h-1) in the hydrogen transfer reduction of cinnamaldehyde and several ketones using propan-2-ol/KOH as a H-donor. Similar hydrogenations of trans-stilbene and cyclohexene were characterized by low conversions. The hydrogenation of 4-phenylbut-3-en-2-one and cinnamaldehyde proceeded with moderate selectivities of the formation of the saturated alcohol or of the of C=C hydrogenation (giving saturated ketone or saturated aldehyde). In the case of cinnamaldehyde, the unsaturated alcohol is initially formed; however, subsequent redox isomerization to the saturated aldehyde with the same catalyst diminishes its yield. The hydrogen transfer from formate to 4-phenylbut-3-en-2-one in an aqueous-organic two-phase mixture was also demonstrated.

scholarly journals Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation

2020 ◽  
Vol 59 (7) ◽  
pp. 4810-4815
Author(s):  
G. Kabelo Ramollo ◽  
Ian Strydom ◽  
Manuel A. Fernandes ◽  
Andreas Lemmerer ◽  
Stephen O. Ojwach ◽  
...  
Keyword(s):  
Transfer Hydrogenation ◽  
Catalytic Transfer Hydrogenation ◽  
Fischer Carbene Complexes ◽  
Carbene Complexes ◽  
Fischer Carbene ◽  
Catalytic Transfer

scholarly journals Carbohydrate-functionalized N-heterocyclic carbene Ru(ii) complexes: synthesis, characterization and catalytic transfer hydrogenation activity

2019 ◽  
Vol 48 (31) ◽  
pp. 11838-11847 ◽  
Author(s):  
Joseph P. Byrne ◽  
Pauline Musembi ◽  
Martin Albrecht
Keyword(s):  
Metal Complex ◽  
Hybrid System ◽  
Transfer Hydrogenation ◽  
Hydrogenation Catalyst ◽  
Catalytic Transfer Hydrogenation ◽  
Hydrogenation Activity ◽  
Catalytic Transfer

Triazolylidene NHCs decorated with a carbohydrate wingtip group were complexed to a ruthenium(ii) center. Deprotection of the carbohydrate in the metal complex affords a carbohydrate–NHC hybrid system for use as a transfer hydrogenation catalyst.

Ultra dispersed cobalt anchored on nitrogen-doping ordered porous carbon as an efficient transfer hydrogenation catalyst

2019 ◽  
Vol 491 ◽  
pp. 544-552 ◽  
Author(s):  
Longkang Zhang ◽  
Junmin Wang ◽  
Ningzhao Shang ◽  
Shutao Gao ◽  
Yongjun Gao ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Nitrogen Doping ◽  
Transfer Hydrogenation ◽  
Hydrogenation Catalyst ◽  
Ordered Porous ◽  
Efficient Transfer

scholarly journals Ir-Catalyzed Reduction of Carbonyl Compounds Using Biogenetic Alcohols

Inorganics ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 114 ◽  
Author(s):  
Yuta Nishina
Keyword(s):  
Carbonyl Compounds ◽  
Fossil Fuel ◽  
Transfer Hydrogenation ◽  
Hydrogenation Catalyst ◽  
Present System ◽  
Aliphatic Aldehydes ◽  
Catalytic Systems

Biomass has gained great attention as an alternative to fuel-derived chemicals. This report concerns new catalytic systems consisting of [IrCp*Cl2]2 (Cp*: Pentamethylcyclopentadienyl) for the reduction of aldehyde and biogenetic alcohols as hydrogen sources. [IrCp*Cl2]2 has been used as a transfer hydrogenation catalyst using fossil fuel-derived alcohols as hydrogen sources in the presence of a base. In contrast, our system does not require any base, and the reaction can proceed in water. Various types of biogenetic alcohols can be used as hydrogen sources, such as monosaccharides, oligosaccharides, and glycerol. Aromatic and aliphatic aldehydes, as well as ketones, were successfully reduced to the corresponding alcohols in the present system.

Ruthenium hydroxycyclopentadienyl N-heterocyclic carbene complexes as transfer hydrogenation catalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94707-94718 ◽  
Author(s):  
Cristiana Cesari ◽  
Andrea Cingolani ◽  
Chiara Parise ◽  
Stefano Zacchini ◽  
Valerio Zanotti ◽  
...  
Keyword(s):  
Transfer Hydrogenation ◽  
Hydrogenation Catalysts ◽  
Carbene Complexes

Novel Ru–NHC complexes bearing cyclopentadienones/hydroxycyclopentadienyls are active and selective in transfer hydrogenation exploiting the cooperation of both classes of ligands.

ChemInform Abstract: Synthesis and Evaluation of a Chiral Heterogeneous Transfer Hydrogenation Catalyst.

ChemInform ◽  
2010 ◽  
Vol 29 (45) ◽  
pp. no-no
Author(s):  
D. J. BAYSTON ◽  
C. B. TRAVERS ◽  
M. E. C. POLYWKA
Keyword(s):  
Transfer Hydrogenation ◽  
Hydrogenation Catalyst
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