N-Propylphthalimide-Substituted Silver(I) N-Heterocyclic Carbene Complexes and Ruthenium(II) N-Heterocyclic Carbene Complexes: Synthesis and Transfer Hydrogenation of Ketones

Abstract

This study deals with the synthesis of N-propylphthalimide substituted Ag(I)-N-heterocyclic carbene (NHC) complexes and N-propylphthalimide substituted Ru(II)-NHC complexes in the transfer hydrogenation of ketones. The Ag(I)-NHC complexes were synthesized from the imidazolium salts and Ag 2 O in dichloromethane at room temperature. The Ru(II)-NHC complexes have been prepared from Ag(I)-NHC complexes using transmetallation method. The six N-propylphthalimide substituted Ag(I)-NHC complexes and six N-propylphthalimide substituted Ru(II)-NHC complexes have been characterized by spectroscopic techniques and elemental analyses. N-propylphthalimide substituted Ru(II)-NHC complexes have been analyzed as catalysts for the transfer hydrogenation of ketones and exhibit activity in this reaction.

o‐Benzenediol‐Functionalized Carbon Nanosheets as Low Self‐Discharge Aqueous Supercapacitors

“…[29] Another band was recordeda tñ = 1610 cm À1 ,w hich indicated C=Cv ibrations. [30][31][32] For NDC-400 th ,anew band associated with phenolic hydroxylg roups appeared at ñ = 3201 cm À1 . [30][31][32] For NDC-400 th ,anew band associated with phenolic hydroxylg roups appeared at ñ = 3201 cm À1 .…”

2‐hydroxyethyl‐substituted (NHC)PdI2(pyridine) (Pd‐PEPPSI) Complexes: Synthesis, Characterization and the Catalytic Activity in the Sonogashira Cross‐coupling Reaction

“…Molecular structure of complex 1 g, anisotropic displacement parameters depicting 30% probability. Selected bond parameters (Å,°): Pd1-I1 2.5949(5), Pd1-I2 2.5970(5), Pd1-N3 2.082(4), Pd1-C1 1.962(4), O1-C9 1.400 (7), O2-C11 1.362(8); I1-Pd1-I2 179.453 (18), I1-Pd1-N3 90.48 (11), I1-Pd1-C1 90.69(13), I2-Pd1-N3 90.01(11), I2-Pd1-C1 88.82(13), C1-Pd1-N3 178.82 (17), C1-N1-C8 123.7(4), N1-C8-C9 114.7(5), C8-C9-O1 113.4(6), C1-N2-C10 125.2(4), N2-C10-C11 114.6(5), C10-C11-O2 113.0 (6)…”

“…Also, NHCs could form strong bonds with most transition metals thanks to their widely tunable structural and electronic properties . These beneficial properties have contributed to the recognition of NHCs as excellent nucleophilic organocatalysts in many fields of application, especially in material and medical sciences,, and also in organometallic chemistry thanks to synthesized homogeneous catalysis …”

“…[9][10][11][12] These beneficial properties have contributed to the recognition of NHCs as excellent nucleophilic organocatalysts in many fields of application, especially in material and medical sciences, [13,14] and also in organometallic chemistry thanks to synthesized homogeneous catalysis. [15][16][17][18][19][20][21] The (NHC)PdX 2 L (L, pyridine derivative) complexes from metal-NHC complexes are known as Pd-PEPPSI (PEPPSI, Pyridine-Enhanced, Precatalyst, Preparation, Stabilisation and Initiation). [22,23] The high catalytic activity of the Pd-PEPPSI complexes is principally attributed to the rapid elimination of the pyridine derivative co-ligand in the catalytic cycle and to the high stability of the Pd-NHC bond.…”

Novel NHC Precursors: Synthesis, Characterization, and Carbonic Anhydrase and Acetylcholinesterase Inhibitory Properties

“…In recent years, NHC precursors of imidazolidinium and benzimidazolium have gained importance in organic and organometallic chemistry. Numerous studies on their catalytic activities, which also contain the publication of our study group, have been published . Also, it has been known that there are a lot of studies about biological activities including antimicrobial and anticancer activities of metal complexes of NHC precursors.…”