6301-00-4Relevant academic research and scientific papers
Electrochemical Synthesis of Soluble Poly(9-hexylfluorene) and Poly(1-hexylindene)
Matsuda, Junzo,Aramaki, Kunitsugu,Nishihara, Hiroshi
, p. 321 - 326 (1994)
Electrochemical oxidation of 9-hexylfluorene and 1-hexylindene in 0.1 mol dm-3 Bu4NBF4-nitromethane affords ?-conjugated polymers, PHF and PHI, respectively, which are fusible and soluble in common organic solvents.Electrode materials affect the formation of the polymers significantly; the molecular weight of PHF increases in the order, glassy carbon (GC) -1, respectively, at room temperature.
Rhodium(II)- or Copper(I)-Catalyzed Formal Intramolecular Carbene Insertion into Vinylic C(sp2)?H Bonds: Access to Substituted 1H-Indenes
Zhou, Qi,Li, Shichao,Zhang, Yan,Wang, Jianbo
, p. 16013 - 16017 (2017/11/27)
A rhodium(II)- or copper(I)-catalyzed formal intramolecular carbene insertion into vinylic C(sp2)?H bonds is reported herein. This method provides straightforward access to 1H-indenes with high efficiency and excellent functional-group compatibility. Mechanistically, the reaction is proposed to involve the following sequence: metal carbene formation, intramolecular nucleophilic addition of the double bond to the electron-deficient carbene carbon atom, dearomatization, and finally a 1,5-H shift.
Amido functionalized ansa half-sandwich dichloride complexes of titanium, zirconium and hafnium with alkyl and ω-alkenyl substituents as homogeneous and self-immobilizing catalyst precursors for ethylene polymerization
Alt, Helmut G.,Reb, Alexander,Milius, Wolfgang,Weis, Annette
, p. 169 - 182 (2007/10/03)
A total of 24 amido functionalized ansa half-sandwich dichloride complexes of titanium, zirconium and hafnium with cyclopentadienyl or indenyl ligands have been prepared, characterized and used for catalytic ethylene polymerization. Alkyl and ω-alkenyl substituents on the aromatic system influence the polymerization activity of the catalysts and the properties of the produced polyethylene. After activation with methylalumoxane the ω-alkenyl substituted catalysts show self-immobilization in ethylene polymerization.
