952610-16-1Relevant articles and documents
Half-Sandwich Ruthenium Complexes for One-Pot Synthesis of Quinolines and Tetrahydroquinolines: Diverse Catalytic Activity in the Coupled Cyclization and Hydrogenation Process
Yun, Xue-Jing,Zhu, Jing-Wei,Jin, Yan,Deng, Wei,Yao, Zi-Jian
, p. 7841 - 7851 (2020)
Four types of half-sandwich ruthenium complexes with an N,O-coordinate mode based on hydroxyindanone-imine ligands have been prepared in good yields. These stable ruthenium complexes exhibited high activity in the catalytic synthesis of quinolines from the reactions of amino alcohols with different types of ketones or secondary alcohols under very mild conditions. Moreover, the methodology for the direct one-pot synthesis of tetrahydroquinoline derivatives from amino alcohols and ketones has been also developed on the basis of the continuous catalytic activity of this ruthenium catalyst in the selective hydrogenation of the obtained quinoline derivatives with a low catalyst loading. The corresponding products, quinolines and tetrahydroquinoline derivatives, were afforded in good to excellent yields. The efficient and diverse catalytic activity of these ruthenium complexes suggested their potential large-scale application. All of the ruthenium complexes were characterized by various spectroscopies to confirm their structures.
Polymerization of methyl methacrylate catalyzed by nickel complexes with hydroxyindanone-imine ligands
Tang, Guangrong,Jin, Guo-Xin
, p. 3840 - 3846 (2008/03/13)
A series of new hydroxyindanone-imine ligands [PhNCC2H 3(CH3)C6H2(CH3)OH] (HL1) and [ArNCC2H3(CH3)C 6H2(R)OH] (Ar = 2,6-i-Pr2C6H 3, R = Me (HL2), R = H (HL3), and R = Cl (HL4)) were synthesized and characterized. Reactions of hydroxyindanone-imines with Ni(OAc)2·4H2O result in the formation of the trinuclear hexa(indanone-iminato)tri(nickel(ii)) complex Ni3[PhNCC2H3(CH3)C6H 2(CH3)O]6 (1) and the mononuclear bis(indanone-iminato)nickel(ii) complexes Ni[ArNCC2H 3(CH3)C6H2(R)O]2 (Ar = 2,6-i-Pr2C6H3, R = Me (2), R = H (3), and R = Cl (4)). All nickel complexes were characterized by their IR, NMR spectra and elemental analyses. In addition, X-ray structure analyses were performed for complexes 1 and 2. After being activated with methylaluminoxane (MAO), these nickel(ii) complexes can be used as catalysts for the polymerization of methyl methacrylate (MMA) to produce syndiotactic-rich PMMA. Catalytic activities and the degree of syndiotacticity of PMMA have been investigated for various reaction conditions. The Royal Society of Chemistry.