An Ionic Liquid Immobilized Palladium Complex for an Effective Heck and Suzuki Coupling Reactions

Ramakrishna, Dileep

doi:10.1007/s42250-018-00038-7

Cited by 6 publications

(1 citation statement)

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“…This work shows air stable system for Heck and Suzuki reactions. In the [EMIM] PF 6 -Water system, the palladiumcatalyzed coupling process demonstrated remarkable fidelity [58]. Copper complex was studied for the catalytic application in Heck and Suzuki reactions (Figure 25).…”

Section: Synthesis For the Transfer Hydrogenation Of Ketonesmentioning

confidence: 99%

Schiff Base Complexes for Catalytic Application

Shariff¹,

Saravu²,

Ramakrishna³

2023

Schiff Base in Organic, Inorganic and Physical Chemistry

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Primary amines are combined with an aldehyde group to generate Schiff base compounds, which are called condensation imine products. This class of compounds has a general structure, R-C=NR\', where R and R\' represent alkyl/aryl/cyclohexyl/heterocyclic group. These compounds contain an azomethine group that is basic in nature due to, (i) the presence of lone pair of electrons on the nitrogen and (ii) electron-donating nature of the double bond. Hence, these compounds, as ligands, participate in the formation of metal complexes. The presence of lone pair of electrons on the nitrogen atom and the hybridization involved explains the physical, chemical, and spectral properties of nitrogen-containing moieties. In the case of (sp2) hybridization (trigonal structure), the lone pair of electrons occupies either a symmetrical unhybridized 2p orbital that is perpendicular to the plane of trigonal hybrids or a symmetrical hybrid orbital, whose axis is in the plane, leaving behind only the π-electrons in the unhybridized 2p orbital. A very similar type of hybridization is experienced by the nitrogen atom in the azomethine group. Traditional phosphine complexes of nickel, palladium, and platinum, particularly those of palladium, have played an extremely important role in the development of homogeneous catalysis. Schiff base complexes as catalysts have been studied for various organic transformations such as oxidation, epoxidation, reduction, coupling reactions, polymerization reactions, hydroformylations, and many more.

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Section: Synthesis For the Transfer Hydrogenation Of Ketonesmentioning

confidence: 99%