- Supported permethylindenyl titanium catalysts for the synthesis of disentangled ultra-high molecular weight polyethylene (: Dis UHMWPE)
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Novel permethylindenyl-phenoxide (PHENI?) ansa-metallocene titanium complexes have been synthesised and immobilised on inorganic solid supports to afford highly effective catalysts for slurry-phase ethylene polymerisation. When supported on solid polymeth
- Buffet, Jean-Charles,Collins Rice, Clement G.,O'Hare, Dermot,Turner, Zo? R.
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supporting information
p. 8600 - 8603
(2021/09/02)
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- NOVEL LIGAND COMPOUND AND TRANSITION METAL COMPOUND COMPRISING THE SAME
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Provided is a ligand compound which is represented by chemical formula 1, can be suitable for producing a polyolefin-based copolymer with low density and molecular weight, and exhibits excellent copolymerization properties. In addition, provided is a tran
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Paragraph 0176-0178
(2019/03/14)
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- Synthesis and characterization of titanium and zirconium complexes with silicone-bridged phenoxycyclopentadienyl ligands
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Dimethylsilyl(2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)titanium dichloride (1a), a useful catalyst precursor for olefin copolymerization, was synthesized at high yield starting from allyl-protected phenolic ligand 3a,which was
- Hanaoka, Hidenori,Hino, Takahiro,Souda, Hiroshi,Yanagi, Kazunori,Oda, Yoshiaki,Imai, Akio
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p. 4059 - 4066
(2008/02/10)
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- Intramolecular carbolithiation of allyl o-lithioaryl ethers: A new enantioselective synthesis of functionalized 2,3-dihydrobenzofurans
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A new and easy method for the diastereoselective synthesis of 3-functionalized 2,3-dihydrobenzofuran derivatives from allyl 2-bromoaryl ethers is described. The key step of this transformation involves an intramolecular carbolithiation reaction of allyl 2-lithioaryl ethers. The substituents in both the allyl and the aryl moieties play an important and decisive role in stopping the reaction at the benzofuran thus avoiding a γ-elimination reaction. Finally, this process is amenable to the synthesis of enantiomerically enriched compounds by using ( - )-sparteine as a chiral inductor.
- Barluenga, Jose,Fananas, Francisco J.,Sanz, Roberto,Marcos, Cesar
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p. 5397 - 5407
(2007/10/03)
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- Transition metal complex, process for producing the same, olefin polymerization catalyst containing the transition metal complex and process for producing olefin polymers
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The present invention relates to a transition metal complex, a process for producing the same, a polymerization catalsyt containing the transition metal complex and a process for producing polymers which uses the catalysts.
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