Rhodium complexes withN-phenylanthranilic acid. Synthesis, structural investigations and catalytic activity in hydrogenation of some aromatic and heteroaromatic compounds

1983 ◽  
Vol 8 (5) ◽  
pp. 266-270 ◽  
Author(s):  
Andrzej F. Borowski
Keyword(s):  
Catalytic Activity ◽  
Acid Synthesis ◽  
Rhodium Complexes ◽  
Structural Investigations ◽  
Heteroaromatic Compounds

Phosphines with 2-imidazolium ligands enhance the catalytic activity and selectivity of rhodium complexes for hydrosilylation reactions

2010 ◽  
Vol 695 (3) ◽  
pp. 431-436 ◽  
Author(s):  
Jiayun Li ◽  
Jiajian Peng ◽  
Ying Bai ◽  
Guodong Zhang ◽  
Guoqiao Lai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rhodium Complexes

Catalytic activity of homogeneous and silica-anchored rhodium complexes

1993 ◽  
Vol 50 (1-2) ◽  
pp. 71-74 ◽  
Author(s):  
M. Čapka ◽  
M. Czakoová ◽  
J. Hjortkjaer ◽  
U. Schubert
Keyword(s):  
Catalytic Activity ◽  
Rhodium Complexes

scholarly journals Hydrogenation of unactivated enamines to tertiary amines: rhodium complexes of fluorinated phosphines give marked improvements in catalytic activity

2015 ◽  
Vol 11 ◽  
pp. 622-627 ◽  
Author(s):  
Sergey Tin ◽  
Tamara Fanjul ◽  
Matthew L Clarke
Keyword(s):  
Catalytic Activity ◽  
Environmentally Benign ◽  
Acid Extraction ◽  
Rhodium Complexes ◽  
Tertiary Amines

In the hydrogenation of sluggish unactivated enamine substrates, Rh complexes of electron-deficient phosphines are demonstrated to be far more reactive catalysts than those derived from triphenylphosphine. These operate at low catalyst loadings (down to 0.01 mol %) and are able to reduce tetrasubstituted enamines. The use of the sustainable and environmentally benign solvent (R)-limonene for the reaction is also reported with the amine isolated by acid extraction.

Ruthenium- and Rhodium-Catalyzed Ring-Opening Coupling Reactions of Cyclopropenones with Alkenes or Alkynes

Synlett ◽  
2018 ◽  
Vol 29 (06) ◽  
pp. 717-722 ◽  
Author(s):  
Teruyuki Kondo ◽  
Ryosuke Taniguchi ◽  
Yu Kimura
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Methyl Acrylate ◽  
Ring Opening ◽  
Argon Atmosphere ◽  
High Catalytic Activity ◽  
Rhodium Complexes ◽  
Coupling Reactions ◽  
Internal Alkynes ◽  
High Yields

Ru3(CO)12-catalyzed divergent ring-opening coupling reactions of a cyclopropenone with methyl acrylate (an electron-deficient alkene) are developed. Under an argon atmosphere, a decarbonylative linear codimer is obtained, while cyclopentenones are obtained under carbon monoxide (20 atm) without decarbonylation. While ruthenium complexes show no catalytic activity for the ring-opening cocyclization of cyclopropenones with ethylene (20 atm) or bicyclo[2.2.1]hept-2-ene (2-norbornene), rhodium complexes, especially [RhCl(η4-1,5-cod)]2, show high catalytic activity for the desired cocyclization reactions to give the corresponding cyclopentenones in high yields and selectivities. In addition, [RhCl(η4-1,5-cod)]2 realizes the catalytic ring-opening co­cyclization of cyclopropenones with internal alkynes to give the corresponding cyclopentadienones. In all these reactions, ruthena- or rhodacyclobutenones are considered to be key intermediates, generated by strain-driven oxidative addition of a cyclopropenone C–C bond to an ­active ruthenium or rhodium species.

Three metal complexes derived from 3-methyl-1H-pyrazole-4-carboxylic acid: synthesis, crystal structures, luminescence and electrocatalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52040-52047 ◽  
Author(s):  
Jing Liu ◽  
Mei-Ling Cheng ◽  
Li-Li Yu ◽  
Sheng-Chun Chen ◽  
Yong-Liang Shao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Carboxylic Acid ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Acid Synthesis ◽  
Bifunctional Catalyst ◽  
Electrocatalytic Properties ◽  
Catalyst Complex

[Cd(HMPCA)2(H2O)4] (1), [Co(H2MPCA)2(DMF)2(H2O)2]Cl2(2), and [Cd3Cl2(HMPCA)4(H2O)2]·2H2O (3) have been synthesized. As a bifunctional catalyst, complex2exhibited excellent catalytic activity for OER and certain catalytic activity for ORR.

Halloysite Nanotubes Functionalized Sulfonic Acid: Synthesis, Spectroscopic Characterization, Computational Studies and Application for the Synthesis of 1,4-Dihydropyridines

2021 ◽  
Vol 18 ◽  
Author(s):  
Princy Gupta ◽  
Nayan Prakash ◽  
Yogeshwar Ramawat ◽  
Palvi Rajput ◽  
Amir Fayaz ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Sulfonic Acid ◽  
Spectroscopic Characterization ◽  
Acid Synthesis ◽  
Halloysite Nanotubes ◽  
Spectroscopic Studies ◽  
Significant Loss ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Chemical Studies

: Naturally occurring clay halloysite is used to synthesize novel halloysite functionalized sulfonic acid in two steps; functionalization followed by oxidation and its catalytic activity is estimated for one-pot synthesis of Hantzsch 1,4-dihydropyridines under green solvent-free conditions. Spectroscopic studies such as FTIR, TGA, elemental analysis and first-principles based quantum chemical studies are used to characterize the catalyst. Recyclability without significant loss of catalytic activity is observed for several runs.

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