100514-75-8Relevant academic research and scientific papers
Bidentate Ru(ii)-NC complexes as catalysts for the dehydrogenative reaction from primary alcohols to carboxylic acids
Gong, Dawei,Hu, Bowen,Chen, Dafa
, p. 8826 - 8834 (2019/06/24)
Four Ru(ii)-NC complexes were synthesized by one-step processes from the corresponding NC ligands with RuHCl(CO)(PPh3)3. These complexes were tested as catalysts for alcohol dehydrogenative reactions, and complex {(C5H4N)-(C6H4)}RuCl(CO)(PPh3)2 (1) showed the highest activity. With KOH as the nucleophile and 0.5 mol% catalyst loading, a series of carboxylic acids were synthesized in toluene without any oxidant. Catalyst 1 could be transformed to complex {(C5H4N)-(C6H4)}RuH(CO)(PPh3)2 (6) when treated with KOH and benzyl alcohol. Complex 6 further reacted with PhCHO and H2O to generate product {(C5H4N)-(C6H4)}Ru(OCOPh)(CO)(PPh3)2 (7). Complexes 6 and 7 exhibited similar efficiency to complex 1, suggesting that they can be regarded as the catalytic intermediates of 1.
A general route for the synthesis of hydrido-carboxylate complexes of the type MH(CO)(κ3-OCOR)(PPh3)2 [M = Ru, Os; R = CH3, CH2Cl, C6H5, CH(CH3)2] and their use as precatalysts for hydrogenation and hydroformylation reactions
Rosales, Merlín,Alvarado, Beatriz,Arrieta, Federico,De La Cruz, Carlos,González, ángel,Molina, Karely,Soto, Otto,Salazar, Yslamar
, p. 530 - 536 (2009/02/01)
The synthesis and solid-state IR, 1H and 31P{1H} NMR spectroscopic characterization of complexes of the type MH(CO)(κ3-OCOR)(PPh3)2 [M = Ru, Os; R = CH3, CH2Cl, C6H5 and CH(CH3)2] are reported in this paper. These compounds were obtained by reaction of the respective cationic complex [MH(CO)(NCMe)2(PPh3)2]BF4 with the sodium salt of the corresponding carboxylic acid in a 1:1 v/v dichloromethane/methanol solution at room temperature. The spectroscopic data of these complexes and some DFT calculations reveal an octahedral geometry with a bidentated carboxylate, two equivalent triphenylphosphines in a mutually trans positions, a linear hydride and a linear carbonyl both in the cis-positions of the coordination sphere. The catalytic results indicate that these complexes are efficient and regioselective precatalysts for the quinoline hydrogenation and for the hydroformylation of 1-hexene, under mild reaction conditions (130 °C and 4 atm H2 and 120 °C and 15 atm H2/CO, respectively). For benzothiophene hydrogenation, the osmium complexes showed low activities whereas the analogous ruthenium complexes were catalytically inactive under somewhat more drastic reaction conditions to those of the quinoline hydrogenation (140 °C and 10 atm H2).
METAL HYDRIDE COMPLEX, METHOD OF HYDROGENATING RING-OPENING POLYMERIZATION POLYMER OF CYCLOOLEFIN, AND PROCESS FOR PRODUCING PRODUCT OF HYDROGENATION OF RING-OPENING POLYMERIZATION POLYMER OF CYCLOOLEFIN
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Page/Page column 32, (2008/06/13)
A metal hydride complex of the invention is a hydride complex of a metal selected from the group consisting of ruthenium, rhodium, osmium and iridium and has one or more aromatic carboxylic acid residues. According to the invention, there is provided a ne
Insertion reactions of acrylonitrile with hydridocarbonylbis(triphenylphosphine)ruthenium(II) carboxylates
Deshpande, S. S.,Gopinathan, Sarada,Gopinathan, C.
, p. 103 - 108 (2007/10/02)
Reactions between and carboxylic acid in 2-methoxyethanol give white crystalline carboxylate complexes of the type , where R = H, CH3, C2H5, C3H7, C6H5, p-OCH3C6H4 or p-CH3C6H4.In these octahedral complexes the carb
