Journal ArticleDOI
Facile Conversion of Alcohols into Esters and Dihydrogen Catalyzed by New Ruthenium Complexes
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TLDR
In this paper, an efficient, environmentally benign method for the preparation of esters from alcohols under mild, neutral conditions without the need for carboxylic acid derivatives and condensing agents was developed.Abstract:
An efficient, environmentally benign method for the preparation of esters from alcohols under mild, neutral conditions without the need for carboxylic acid derivatives and condensing agents was developed. Catalyst design, based on new Ru(II) hydrido carbonyl complexes incorporating electron-rich PNP and PNN ligands has resulted in the novel complex (I) which is an outstanding catalyst for the dehydrogenation of primary alcohols to esters and H2 under neutral conditions.read more
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Chemoselective hydrogenation of carbonyl compounds and acceptorless dehydrogenative coupling of alcohols.
TL;DR: OsHCl(CO)[κ(3)-PyCH2NHC2H4NHPtBu2] is the first efficient catalyst for chemoselective reduction of challenging unsaturated esters to enols and for acceptorless coupling of amines with MeOH and EtOH affording formamides and acetamides.
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Moderne Katalysatoren zur Hydrierung von Kohlendioxid
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Enhanced Reactivities toward Amines by Introducing an Imine Arm to the Pincer Ligand: Direct Coupling of Two Amines To Form an Imine Without Oxidant
TL;DR: In this paper, the reactivities of ruthenium pincer complexes for direct coupling of amines to form imines were enhanced by introducing an imine arm to the ligand.
Journal ArticleDOI
Ruthenium pincer complexes: ligand design and complex synthesis
TL;DR: In this article, the pincer ligand design is considered as a key feature of RPCs and various strategies have been developed for RPC design and synthesis, which indicate that ligand selection is a key factor in RPC synthesis.
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Efficient hydrogenation of biomass-derived cyclic di-esters to 1,2-diols
TL;DR: The unprecedented homogeneous hydrogenation of cyclic di-esters, in particular biomass-derived glycolide and lactide, to the corresponding 1,2-diols is catalyzed by Ru(II) PNN (1) and Ru( II) CNN (2) pincer complexes under mild hydrogen pressure and (in the case of 1) neutral conditions.
References
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Journal ArticleDOI
Direct Condensation of Carboxylic Acids with Alcohols Catalyzed by Hafnium(IV) Salts
TL;DR: It is shown that the direct condensation of equimolar amounts of carboxylic acids and alcohols can be achieved with the use of hafnium(IV) salts, such as commercially available ha fnium( IV) chloride and hafnia(IV), which may be suitable for large-scale operations.
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Ruthenium-catalyzed oxidative transformation of alcohols and aldehydes to esters and lactones
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Electron-Rich, Bulky Ruthenium PNP-Type Complexes. Acceptorless Catalytic Alcohol Dehydrogenation
TL;DR: In this article, the electron-rich, bulky tridentate PNP ligand (2,6-bis-(di-tert-butylphosphinomethyl)pyridine) with Ru(PPh3)3Cl2 at 65 °C resulted in formation of a solution containing the dinitrogen monomeric Ru(II) complex 1a and the N2-bridged dinuclear Ru(2) complex 2, which can be interconverted.
Journal ArticleDOI
Catalytic disproportionation of aldehydes with ruthenium complexes
N. Menashe,Youval Shvo +1 more