SYNTHESIS OF NOVEL BIS(PHOSPHINO)AMINE-RUII(ACAC)2 COMPLEXES, AND INVESTIGATION OF CATALYTIC ACTIVITY IN TRANSFER HYDROGENATION DOI Open Access
Duygu Elma Karakaş, Uğur Işık, Murat Aydemir

et al.

Middle East Journal of Science, Journal Year: 2022, Volume and Issue: 8(2), P. 147 - 156

Published: Dec. 31, 2022

In this study, reactions of (PPh2)2NCH2CH2N(PPh2)2 (L1) and {(PPh2)2NCH2CH2}3N (L2) with [RuII(acac)2(CH3CN)2] led to the production new dinuclear complex [Ru(acac)2]2(L1) (1) trinuclear [Ru(acac)2]3(L2) (2). Complex 1 2 are excellent candidates for role catalyst precursors in transfer hydrogenation (TH) acetophenone its derivatives. Compared (1), (2) is an exceptional catalyst, producing corresponding alcohols 98–99% yields 20 minutes at 80 oC (TOF≤300 h-1) TH process. A comparison catalytic properties complexes also briefly discussed. structures have been characterized by combining nuclear magnetic resonance (NMR), Fourier transform infrared (FT-IR), elemental analysis.

Language: Английский

Transfer Hydrogenation of CO2 and CO2 Derivatives using Alcohols as Hydride Sources: Boosting an H2-Free Alternative Strategy DOI
Abhishek Kumar,

Ritu Bhardwaj,

Sanajit Kumar Mandal

et al.

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(15), P. 8886 - 8903

Published: July 11, 2022

Numerous strategies have been developed for the reduction of highly challenging CO2 gas and its conversion into useful feedstock chemicals. Among all protocols, traditional approach where H2 is used as a reductant has dominantly exploited. During past decade, enormous efforts made in tackling challenge by keeping sustainability major goal. As an alternative option, adoption "transfer hydrogenation" strategy received attention process. The utilization biomass-derived alcohols hydride donors promises to make process viable advantageous over hydrogenation survival homogeneous transition-metal-based catalysts these processes under harsh reaction conditions (elevated temperature basic medium) considerable challenge. Hence, development efficient robust CO2-transfer important. In this Perspective, we highlight overall evolution transfer (and derivatives) hydrogen-rich products achieved during decade. role tuning ligand backbone kinetically more favorable discussed detail. available reports field emphasized advantages using place nonrenewable gas. Potential benefits opportunities are critically presented encourage further intense research field.

Language: Английский

Citations

20
Green procedures for synthesizing potential hNMDA receptor allosteric modulators through reduction and one-pot reductive acetylation of nitro(hetero)arenes using a superparamagnetic Fe3O4@APTMS@Cp2ZrClx (x = 0, 1, 2) nanocatalyst DOI Creative Commons
Hossein Mousavi, Behzad Zeynizadeh,

Farhad Sepehraddin

et al.

Nanoscale Advances, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

In this research, we have developed diverse strategies for synthesizing potential h NMDA receptor allosteric modulators through reduction and one-pot reductive acetylation of nitro(hetero)arenes using a mesoporous zirconocene-containing nanocatalyst.

Language: Английский

Citations

0
Heterogeneous Cobalt Nanocatalyst for Reductive Transformation of Nitroarenes to Aryl Amines Using Isopropanol as a Hydrogen Source DOI

Manvender Yadav,

Raju Ranjith Kumar,

Achala Rana

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Herein, we introduce an efficient catalytic transfer hydrogenation method using inexpensive, environmentally friendly, and readily available isopropyl alcohol as a hydrogen donor for selectively reducing diverse nitroarenes. The process employs cobalt-based nanocatalyst (Co–N/Al2O3), synthesized via simple impregnation cobalt nitrate, 1,10-phenanthroline, γ-Al2O3 precursors. This proves highly effective in producing wide range of aryl amines (35 examples), pharmaceutical intermediates (4 late-stage functional group transformations (1 example), with yields ranging from moderate to excellent (70–98%) across various scales. catalyst was characterized HR-TEM, powder XRD, XPS, H2-TPR, N2 adsorption–desorption, Raman spectroscopy, ICP-OES techniques. These analyses confirmed the formation Co3O4 nanoparticles. exceptional performance Co–N/Al2O3 is attributed its optimized textural, morphological, acidic properties, which are superior other catalysts. Mechanistic studies provided insights into formed during different stages reaction indirect route (condensation mechanism). recyclability were validated through experimental testing, demonstrating consistent efficiency over three consecutive cycles. sustainable offers promising alternative conventional processes that use molecular hydrogen.

Language: Английский

Citations

0
1,3,4-Oxadiazole-functionalized α-amino-phosphonates as ligands for the ruthenium-catalyzed reduction of ketones DOI

Shaima Hkiri,

Christophe Gourlaouen, Soufiane Touil

et al.

New Journal of Chemistry, Journal Year: 2021, Volume and Issue: 45(25), P. 11327 - 11335

Published: Jan. 1, 2021

1,3,4-Oxadiazole-functionalized ruthenium catalysts for the reduction of ketone.

Language: Английский

Citations

13
Parameterization of Phosphine Ligands Modified Rh Complexes to Unravel Quantitative Structure‐Activity Relationship and Mechanistic Pathways in Hydroformylation DOI
Jie Wei, Maoshuai Li, Jie Ding

et al.

ChemCatChem, Journal Year: 2022, Volume and Issue: 14(16)

Published: June 3, 2022

Abstract This study has established the quantitative structure‐activity relationship (QSAR) model to predict formaldehyde hydroformylation activity using a class of phosphine‐Rh complexes and computational mechanistic pathway analysis. A group parameters (e. g., cone angle, G‐parameter, buried volume, CO vibration frequency, NBO charge, HOMO LUMO energy, Rh−P distance) describing complex structural steric electronic) features were achieved for descriptor database monodentate phosphine ligands. Mathematical modelling catalytic results with descriptors via multivariate linear regression reveals rate is principally under electronic control within investigated Computational analysis demonstrates significant impact feature on TOF‐determining transition state/intermediate energetic span. The H 2 distortion energy elucidates variation span states related oxidation addition, rationally accounting reaction outcomes.

Language: Английский

Citations

8
Ruthenium(II) Tris‐Pyrazolylmethane Complexes in Transfer Hydrogenation Reactions DOI
Alberto Gobbo, Xinyuan Ma, Gianluca Ciancaleoni

et al.

European Journal of Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 26(18)

Published: May 2, 2023

Abstract While ruthenium(II) arene complexes have been widely investigated for their potential in catalytic transfer hydrogenation, studies on homologous compounds replacing the ligand with six‐electron donor tris(1‐pyrazolyl)methane (tpm) are almost absent literature. The reactions of [RuCl(κ 3 ‐tpm)(PPh ) 2 ]Cl, 1 , a series nitrogen ligands (L) proceeded selective PPh mono‐substitution, affording novel )(L)]Cl (L=NCMe, ; NCPh, imidazole, 4 quantitative yields. Products – were fully characterized by IR and multinuclear NMR spectroscopy, moreover molecular structure was ascertained single crystal X‐ray diffraction. Compounds evaluated as precursors hydrogenation ketones isopropanol hydrogen source, exhibited highest activity. Extensive experiments DFT calculations allowed to elucidate mechanism process, suggesting crucial role played tpm ligand, reversibly switching from tri‐ bidentate coordination during cycle.

Language: Английский

Citations

4
Application of enaminone ruthenium(II) complexes as catalysts in the transfer hydrogenation of ketones DOI
Rukiye Fırıncı, Erkan Fırıncı, Resul Sevinçek

et al.

Polyhedron, Journal Year: 2024, Volume and Issue: 264, P. 117247 - 117247

Published: Oct. 9, 2024

Language: Английский

Citations

1
Unmasking Arene Ruthenium Building Blocks DOI
Bruno Therrien

The Chemical Record, Journal Year: 2020, Volume and Issue: 21(3), P. 460 - 468

Published: Nov. 20, 2020

Abstract We have, like many others, contributed to the development and popularity of arene ruthenium assemblies. From early on, our research was driven by applications, mainly biological (therapeutic, drug delivery, DNA interactions, photodynamic therapy, imaging). For nearly 15 years, we have focused on use building block as a tool construct added‐value objects. In this account, want give basic reasons behind choice, uncover most successful examples, with an emphasis foreseen applications.

Language: Английский

Citations

9
Nano Ag/AgCl wires-photocatalyzed hydrogen production and transfer hydrogenation of Knoevenagel-type products DOI
Yasser A. Attia, Yasser M. A. Mohamed

New Journal of Chemistry, Journal Year: 2021, Volume and Issue: 46(4), P. 1677 - 1686

Published: Dec. 13, 2021

An investigation of the relationship between morphology Ag/AgCl nanostructured composites with their catalytic performance has been reported.

Language: Английский

Citations

8
NOVEL MONONUCLEAR METAL-PHOSPHINITE COMPOUNDS AND CATALYTIC PERFORMANCE IN TRANSFER HYDROGENATION OF KETONES DOI Open Access
Uğur Işık, Nermin Meri̇ç, Murat Aydemir

et al.

Middle East Journal of Science, Journal Year: 2022, Volume and Issue: 8(1), P. 1 - 15

Published: June 1, 2022

Since the obtained chiral alcohols are rather useful as well biologically active compounds, reduction of ketones to their respective is a crucial topic in synthetic chemistry. Thus, new phosphinite ligand was synthesized by interaction cationic species N-vinyl imidazolium (1) with PCy2Cl. This combination [Ru(η6-p-cymene)(µ-Cl)Cl]2 and Ir(η5-C5Me5)(μ-Cl)Cl]2 gave catalytic systems for transfer hydrogenation reaction. Under optimum circumstances, ruthenium complex (3) showed high conversion reaction acetophenone. Reversibility found be low under these circumstances.

Language: Английский

Citations

4