Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 128143-89-5, Name is 4′-Chloro-2,2′:6′,2”-terpyridine, molecular formula is C15H10ClN3, belongs to catalyst-ligand compound, is a common compound. In a patnet, author is Qu, Liye, once mentioned the new application about 128143-89-5, SDS of cas: 128143-89-5.
Rare-Earth Metal Complexes Supported by Polydentate Phenoxy- Type Ligand Platforms: C-H Activation Reactivity and CO2/Epoxide Copolymerization Catalysis
Mono- and dinuclear group 3 metal complexes incorporating polydentate bis(imino)phenoxy {(NO)-O-2}(-) and bis(amido)phenoxy {(NO)-O-2}(3-) ligands were synthesized by alkane elimination reactions from the tris(alkyl) M(CH2SiMe3)(3) (THF)(2) and M(CH2C6H4-o-NMe2)(3) (M = Sc, Y) precursors. Complex laY was used for the selective C-H activation of 2-phenylpyridine at the 2′-phenyl position affording the corresponding bis(aryl) product 3a-Y, which was found to be reacted reluctantly with weak electrophiles (styrene, imines, hydrosilanes). The mechanism of formation of 3a-Y was established by DFT calculations, which also corroborated high stability of the complex toward insertion of styrene, apparently stemming from the inability to form the corresponding adduct. Copolymerization of cyclohexene oxide and CO2 promoted by 1a-Y (0.1-0.5 mol %) was demonstrated to proceed under mild conditions (toluene, 70 P-CO2 = 12 bar) giving polycarbonates with high efficiency (maximal TON of 460) and selectivity (97-99% of carbonate units).
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Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI