Bulky 2,6-dibenzhydryl-4-methylphenyl β-diiminato derived complexes of Pd(II) and Cu(II): Efficient catalysts for Suzuki coupling and alcohol oxidation

Saxena, Parul; Murugavel, Ramaswamy

doi:10.1016/j.jorganchem.2018.05.003

Cited by 12 publications

(2 citation statements)

References 92 publications

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“…Copper (II)‐complexes of amino acid Schiff base derivatives have high applicability in biology, corrosion inhibition reagents, photosynthetic inhibiting agents, DNA/RNA binding cleavage and antioxidants . The electrochemical features of Cu (II)‐chelates for the Cu (II)/Cu (I) electron transfer couple realized that many Cu (II)‐complexes were applied as homogeneous and heterogeneous catalysts for catalytic hydrolysis of amino acid esters, C―C cross‐coupling reaction, oxidation and epoxidation processes…”

Section: Introductionmentioning

confidence: 99%

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Al-Hussein

Adam

2020

Applied Organom Chemis

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N‐Salicylidene amino acid Schiff base sodium sulfonate salt, as a tridentate dibasic chelating ligand, was obtained from the common condensation of salicylaldehyde‐5‐sodium sulfonate with tyrosine (HPST). The internal formed ligand coordinated to Cu2+ ion in an aqueous media affording new Cu (II)‐complex (Cu‐PST), which characterized by various physico‐chemicals spectral tools. The mononuclear complex was evaluated as a homogeneous and heterogeneous catalyst in the (ep)oxidation protocols of 1,2‐cyclooctene and benzyl alcohol. Heterogeneously, Cu‐PST was immobilized on Fe3O4‐SiO2, as nanoparticles. The heterogeneous catalyst was characterized by infrared, X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, energy‐dispersive spectroscopy, Brunauer−Emmett−Teller and magnetism. Homogeneously, the temperature, solvent and oxidant influences were examined in the catalytic reactions to realize the best reaction conditions. Cu‐catalyst exhibited better catalytic performance in the (ep)oxidation processes homogeneously than that in the heterogeneous phase at 80°C for 2 hr in acetonitrile. Reusability of the homogeneous catalyst was for a maximum of three times in the (ep)oxidation reaction, whereas the heterogeneous catalyst was active for six times. A mechanistic pathway was proposed for both catalysts, comparatively.

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Section: Introductionmentioning

confidence: 99%

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Al-Hussein

Adam

2020

Applied Organom Chemis

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“…5,6,23,45,46 Several crystal structures of cyclic substrate-palladium complexes are available in the literature which represent the k 2 coordination mode of carboxylates shared by two Pd atoms. [47][48][49][50][51][52] It has been reported in many literature studies that hard Lewis acidic metal salts, such as alkali metal ions (Na + , K + , Cs + , etc. ), make the k 1 mode preferred through coordination with a carboxylate in a bidentate fashion.…”

Section: Coordination Modes Of Carboxylatesmentioning

confidence: 99%