Synthesis and characterization of copper(I) compounds incorporating pyrazole-derived ligands: A study on carbon–carbon coupling reaction

Li, Chen Yi; Lien, Yu-Ling; Vinayagam, Jayaramann; Datta, Amitabha; Hu, Ting; Lin, Chia Her; Huang, Jui Hsien

doi:10.1016/j.ica.2015.07.018

Cited by 3 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The easily accessible N , N ‐bis[(1 H ‐pyrazol‐1‐yl)methyl]propane‐1‐amine ( pzma ) ligand (Scheme ) exhibits a central amine position which could also be used to connect two tridentate units for the synthesis of dinucleating ligands. Interestingly, prior investigation of bis(pyrazolylmethyl)phenylamine ligands had evidenced hemilabile properties;, i.e., a κ 2 coordination mode for copper(I) resembling our bidentate, catalytically active model systems and a κ 3 mode for copper(II) which should, e.g., stabilize copper(II) µ‐η 2 :η 2 peroxo complexes. In this context, hemilabile ligands may be useful to create a flexible coordination environment which could facilitate the coordination of external substrates for their catalytic conversion .…”

Section: Introductionmentioning

confidence: 75%

“…As the bipyrazolic ligands can either bind in a κ 2 or κ 3 fashion to copper centers (see above),, , 1a and 1b were treated with copper(II) perchlorate hexahydrate and copper(II) chloride dihydrate in order to determine the bonding mode to copper(II). From these reactions six copper(II) complexes were obtained which were investigated by single‐crystal X‐ray diffraction (Scheme , Table S1).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Employing Linear Tridentate Ligands with Pyrazole End Groups in Catalytic Tyrosinase Model Chemistry: Does Hemilability Matter?

et al. 2019

View full text Add to dashboard Cite

Several copper(I) and copper(II) complexes supported by hemilabile bis(pyrazolylmethyl)amine (pzma) ligands are synthesized and structurally characterized. The copper(I) complexes with hexafluoridophosphate or perchlorate anions are employed as catalysts for the tyrosinase‐like oxygenation of 2,4‐di‐tert‐butylphenol (DTBP‐H). Their activities are comparable to that of [Cu(MeCN)2PMP]PF6 (PMP= pyrazolylmethylpyridine) investigated earlier. In contrast to the copper(I) pzma complexes, their congeners supported by non‐hemilabile bis(pyrazolylethyl)amine (pzea) ligands are found to be catalytically inactive.

show abstract

Section: Introductionmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Employing Linear Tridentate Ligands with Pyrazole End Groups in Catalytic Tyrosinase Model Chemistry: Does Hemilability Matter?

et al. 2019

View full text Add to dashboard Cite

show abstract

Room temperature transmetallation from tris(pentafluorophenyl)borane to cyclometallated iridium(iii)

Maity

Kölsch

et al. 2017

Dalton Trans.

View full text Add to dashboard Cite

Transmetallation reactions involving organoboron reagents and transition metals are legion in synthetic organometallic chemistry and homogeneous catalysis. Triarylboranes (BAr) have been observed to participate in transmetallation reactions with many transition metals, typically following abstraction of an alkyl (R) or hydride ligand by the Lewis acidic borane. Here, an unusual transmetallation strategy is described where an aryl group from a borane replaces a weakly coordinated PF ligand. The precursors Ir(C^N)(CNAr)(FPF) (C^N = cyclometallating ligand, CNAr = aryl isocyanide) react smoothly with B(CF) to give complexes of the type Ir(C^N)(CNAr)(CF), a previously unobserved structure type featuring an unchelated aryl ligand. The reaction tolerates a variety of C^N ligands and a range of electronically and sterically varied aryl isocyanide ancillary ligands. A total of six complexes of this type are described, two of which are characterized by single-crystal X-ray diffraction. All but one of the complexes luminesces at room temperature, with the emission wavelength dependent on the C^N ligand.

show abstract

Zinc(II) complexes containing N′-aromatic group substituted N,N′,N-bis((1H-pyrazol-1-yl)methyl)amines: Synthesis, characterization, and polymerizations of methyl methacrylate and rac-lactide

Shin

Cho

Lee

et al. 2018

Journal of Coordination Chemistry

View full text Add to dashboard Cite

show abstract

Synthesis and characterization of copper(I) compounds incorporating pyrazole-derived ligands: A study on carbon–carbon coupling reaction

Cited by 3 publications

References 45 publications

Employing Linear Tridentate Ligands with Pyrazole End Groups in Catalytic Tyrosinase Model Chemistry: Does Hemilability Matter?

Employing Linear Tridentate Ligands with Pyrazole End Groups in Catalytic Tyrosinase Model Chemistry: Does Hemilability Matter?

Room temperature transmetallation from tris(pentafluorophenyl)borane to cyclometallated iridium(iii)

Zinc(II) complexes containing N′-aromatic group substituted N,N′,N-bis((1H-pyrazol-1-yl)methyl)amines: Synthesis, characterization, and polymerizations of methyl methacrylate and rac-lactide

Contact Info

Product

Resources

About