Transition metals in organic synthesis: Hydroformylation, reduction, and oxidation. Annual survey covering the year 1992

Ungváry, Ferenc

doi:10.1016/0022-328x(94)88095-6

Cited by 12 publications

(2 citation statements)

References 579 publications

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“…Hydroformylations are one of the most important synthetic transformations developed in the 20th century with large-scale industrial applications. − The amount of hydroformylation products produced per year reflects its importance. Separation of the expensive Rh-based catalyst was first achieved by Kuntz, using the now well-known TPPTS ligand .…”

Section: Applications Of Magnetic Nanocatalystsmentioning

confidence: 99%

Magnetically Recoverable Nanocatalysts

et al. 2011

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Section: Applications Of Magnetic Nanocatalystsmentioning

confidence: 99%

Magnetically Recoverable Nanocatalysts

et al. 2011

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“…Although specific mechanisms may vary based on ligand(s), olefin substrate, and conditions, the key steps of olefin hydrogenation are usually proposed to be oxidative addition of H 2 , olefin coordination, migratory insertion of coordinated olefin into a Rh-hydride bond, and reductive elimination from a Rh III (H)(alkyl) intermediate to release the hydrogenated product (Scheme ). ,,− Previous studies have shown that the oxidative addition is often the rate-determining step for Rh(I)-catalyzed olefin hydrogenation. ,− Thus, we anticipated that the capping arene ligated Rh(I)-catalyzed olefin hydrogenation would follow one of the general mechanisms shown in Scheme , during which the oxidative addition of H 2 on the Rh(I) metal center would likely play an important role in the catalytic cycle.…”

Section: Introductionmentioning

confidence: 99%

Capping Arene Ligated Rhodium-Catalyzed Olefin Hydrogenation: A Model Study of the Ligand Influence on a Catalytic Process That Incorporates Oxidative Addition and Reductive Elimination

et al. 2022

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The ligand influence on olefin hydrogenation using four capping arene ligated Rh(I) catalyst precursors (FP)Rh(η 2 -C 2 H 4 )Cl {FP = capping arene ligands, including 6-FP (8,8′-(1,2-phenylene)diquinoline), 6-NP FP (8,8′-(2,3naphthalene)diquinoline), 5-FP (1,2-bis(N-7-azaindolyl)benzene) and 5-NP FP [2,3-bis(N-7-azaindolyl)naphthalene]} has been studied. Our studies indicate that relative observed rates of catalytic olefin hydrogenation follow the trend (6-FP)Rh(η 2 -C 2 H 4 )Cl > (5-FP)Rh(η 2 -C 2 H 4 )Cl. Based on combined experimental and density functional theory modeling studies, we propose that the observed differences in the rate of (6-FP)Rh(η 2 -C 2 H 4 )Cl and (5-FP)Rh(η 2 -C 2 H 4 )Clcatalyzed olefin hydrogenation are most likely attributed to the difference in the activation energies for the dihydrogen oxidative addition step. We are unable to directly compare the rates of olefin hydrogenation using (6-NP FP)Rh(η 2 -C 2 H 4 )Cl and (5-NP FP)Rh(η 2 -C 2 H 4 )Cl as the catalyst precursor since (5-NP FP)Rh(η 2 -C 2 H 4 )Cl undergoes relatively rapid formation of an active catalyst that does not coordinate 5-NP FP.

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Hydroformylation – Homogeneous

Ungváry¹

2002

Encyclopedia of Catalysis

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Transition metals in organic synthesis: Hydroformylation, reduction, and oxidation. Annual survey covering the year 1992

Cited by 12 publications

References 579 publications

Magnetically Recoverable Nanocatalysts

Magnetically Recoverable Nanocatalysts

Capping Arene Ligated Rhodium-Catalyzed Olefin Hydrogenation: A Model Study of the Ligand Influence on a Catalytic Process That Incorporates Oxidative Addition and Reductive Elimination

Hydroformylation – Homogeneous

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