Catalytic CO2 hydrogenation to formate by a ruthenium pincer complex
This paper reports the hydrogenation of carbon dioxide to formate catalyzed by the Ru pincer complex Ru(PNN)CO(H) (PNN = 6-(di-tert- butylphosphinomethylene)-2-(N,N-diethylaminomethyl)-1,6-dihydropyridine). Stoichiometric studies are presented that support the feasibility of the individual steps in a proposed catalytic cycle for this transformation. The influence of base and solvent on catalyst performance is explored. Overall, under optimized conditions (using diglyme as the solvent and potassium carbonate as the base) up to 23,000 turnovers of formate and a turnover frequency of up to 2,200 h-1 can be achieved.
Huff, Chelsea A.,Sanford, Melanie S.
p. 2412 - 2416
(2013/10/22)
Reversible carbon-carbon bond formation between carbonyl compounds and a ruthenium pincer complex
This communication describes the reversible reaction of a ruthenium pincer complex with a variety of carbonyl compounds. Both NMR spectroscopic and X-ray crystallographic characterization of isomeric carbonyl adducts are reported, and the equilibrium constants for carbonyl binding have been determined.
Huff, Chelsea A.,Kampf, Jeff W.,Sanford, Melanie S.
supporting information
p. 7147 - 7149
(2013/08/23)
Facile conversion of alcohols into esters and dihydrogen catalyzed by new ruthenium complexes
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. Copyright
Zhang, Jing,Leitus, Gregory,Ben-David, Yehoshoa,Milstein, David
p. 10840 - 10841
(2007/10/03)
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