Ru(II) complexes containing NOO donors of tridentate Schiff base ligands: Synthesis, characterization, crystal structure and catalytic activity in transfer hydrogenation of ketones

Premkumar, Muniyappan; Vijayan, Paranthaman; Galmari, Venkatachalam

doi:10.1016/j.cinorg.2023.100003

Cited by 2 publications

(1 citation statement)

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“…Since the many binding mechanisms of bi, tri, and tetra-dentate Schiff base ligands are synthetically flexible, metal Schiff base complexes have been the subject of intense research for many years [12]. Schiff base metal complexes have a broad range of biological applications in numerous fields [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and catalytic investigation of alumina supported derived benzene- 1,3 diol - cobalt complexes

Elabeden,

El-Molla,

Shebl

et al. 2024

Preprint

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4,6-bis[(1E)-N-(2-hydroxyethyl) ethanimidoyl] benzene-1,3-diol) Cobalt and (4,6-bis [(1E)-N-benzylethanimidoyl] benzene-1,3-diol) Cobalt complexes were successfully supported on Al2O3. Furthermore, the catalytic effectiveness of each were evaluated in the process of decomposition of hydrogen peroxide (H2O2). It's interesting to note that the loading Co-complexes on Al2O3 catalyst resulted in a notable advancement in the catalytic efficiencies compared with single Al2O3catalysts. However, the influence of the concentration of Co-complexes were studied to get optimum amount. The catalysts were then examined using high-resolution transmission electron microscopy (HR-TEM), N2 adsorption-desorption analysis, and X-ray diffraction (XRD). Results denoted that 0.015 Co-complexes / Al2O3 have the highest catalytic activity. The effect of temperature on the catalytic decomposition of H2O2 has been investigated it was found that as the temperature increases the catalytic activity enhanced. Ultimately, the 0.015 Co-complex / Al2O3 catalyst showed greater stability throughout the H2O2 decomposition process and is recyclable several times.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and catalytic investigation of alumina supported derived benzene- 1,3 diol - cobalt complexes

Elabeden,

El-Molla,

Shebl

et al. 2024

Preprint

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Synthesis and Application of Phosphinite Ligand-Containing Ruthenium Catalysts in Transfer Hydrogenation

Tursynbek,

Rafikova,

Dembitsky

et al. 2024

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Transfer hydrogenation (TH) is a highly significant reaction in organic chemistry, especially in the synthesis of pharmaceuticals, agrochemicals, and fine chemicals. This method involves the transfer of hydrogen from a donor molecule to an unsaturated substrate, offering a safer and more convenient alternative to direct hydrogenation, which typically requires high-pressure hydrogen gas. TH stands out for its ability to selectively reduce multiple functional groups under milder conditions, thereby reducing the risk of overreduction or damage to sensitive functional groups. This technique is particularly valuable in asymmetric synthesis (AS), where chiral catalysts enable the production of enantiomerically pure compounds, crucial for drug development.Ruthenium complexes are particularly noteworthy for their effectiveness in asymmetric TH. Their stability and adaptability to different reaction environments make them ideal for both laboratory-scale and industrial applications. Phosphinite ligands (P(OR)R'2) are used in synthesis of complexes to improve their properties. These ligands are known for their ability to finely tune the electronic and steric properties of metal centers. The electron-donating nature of the phosphorus atom, combined with the variability in the R and R' groups, allows for significant customization of the catalyst's properties.The purpose of the work is to review up-to-date discoveries in the field of TH.The integration of phosphinite ligands into ruthenium catalysts marks a significant advancement in the field of TH. These catalysts exhibit enhanced efficiency, selectivity, and stability, proving crucial in AS. The study's exploration of various hydrogen sources, bases, and mechanisms has provided deeper insight into the process of TH.

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Ru(II) complexes containing NOO donors of tridentate Schiff base ligands: Synthesis, characterization, crystal structure and catalytic activity in transfer hydrogenation of ketones

Cited by 2 publications

References 57 publications

Synthesis, characterization and catalytic investigation of alumina supported derived benzene- 1,3 diol - cobalt complexes

Synthesis, characterization and catalytic investigation of alumina supported derived benzene- 1,3 diol - cobalt complexes

Synthesis and Application of Phosphinite Ligand-Containing Ruthenium Catalysts in Transfer Hydrogenation

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