elemental analysis and spectroscopic methods (UV–Vis, 1H NMR, FTIR). Single crystals of H2L1Cl and H2L2Cl were prepared for crystallographic analysis, which showed similar X-ray structures for both ligands with chiral P212121 space group. The ligands were used for synthesis of the following copper(II) complexes: [Cu(HL1)Cl]Cl, [Cu(HL2)Cl]Cl·H2O, and [Cu(HL3)Cl]Cl. All complexes were characterized by
An imidazolium ionic compound-supported palladium complex as an efficient catalyst for Suzuki–Miyaura reactions in aqueous media
作者:Yingxiao Zong、Junke Wang、Yubi He、Guoren Yue、Xicun Wang、Yi Pan
DOI:10.1039/c6ra19850c
日期:——
A water soluble and efficient ionic compound-supported palladiumcomplex was prepared. The structure and composition of the complex was characterized by FT-IR, NMR, ICP-OES and mass spectrometry. The complex exhibits high catalytic activity for Suzuki–Miyaurareactions in aqueous media. Moreover, the catalyst shows outstanding stability and reusability, and it can be recovered simply and effectively
Preparation of Mononuclear, Homodinuclear, and Heterotrinuclear Complexes by Salicylaldiminato-Functionalized Imidazolium Salt: Approach to Multifunctional Catalysts
A salicylaldiminato imidazolium salt that bears both a Schiff base and imidazolium salt moiety was used to synthesize heterometallic compounds that could serve as multifunctional catalysts in certain reactions. The successful preparation of seven mononuclear compounds with a variety of transition metals (Pd, Ir, Ru, Zn, Ni) illustrated the high versatility of this class of ligands, which is crucial
Half-sandwich ruthenium(II) complexes with water-soluble Schiff base ligands: Synthesis and catalytic activity in transfer hydrogenation of carbonyl compounds
New ionic Schiff-base ligands have been synthesized by condensation of (3-formyl-4-hydroxybenzyl)triphenylphosphonium and 3-(3-formyl-4-hydroxybenzyl)-1-methyl-1H-imidazol-3-ium chloride and hexafluorophosphate salts with N,N-dimethylethylenediamine. Treatment of the dimeric derivative [RuCl(μ-Cl)(η6-p-cymene)}2] with two equivalents of these ligands allowed the preparation of novel mononuclear water-soluble
Highly efficient synthesis of cyclic carbonates from epoxides catalyzed by salen aluminum complexes with built-in “CO<sub>2</sub> capture” capability under mild conditions
作者:Rongchang Luo、Xiantai Zhou、Shaoyun Chen、Yang Li、Lei Zhou、Hongbing Ji
DOI:10.1039/c3gc42388c
日期:——
A polyether-based imidazolium ionic liquid functionalized salen Al complex displays high efficiency and reusability as a homogeneous, single-component and multi-functional catalyst for the cycloaddition of CO2 to epoxides under mild conditions.