Hydrozirconation--Isomerisation. Reactions of Terminally Functionalised Olefins with Zirconocene Hydrides and General Aspects.
نویسندگان
چکیده
منابع مشابه
Insertion and isomerisation of internal olefins at alkylaluminium hydride: catalysis with zirconocene dichloride.
The insertion of internal olefins (hydroalumination) and chain walking isomerisation at di-n-octylaluminium hydride [Al(Oct)2H], promoted by zirconocene dichloride [Cp2ZrCl2] has been studied. The reaction between [Cp2ZrCl2] and [Al(Oct)2H] in non-polar solvents leads to clusters containing bridging hydride ligands between Zr and Al. This system promotes hydroalumination of 1-octene but is larg...
متن کاملBinding of molecular magnesium hydrides to a zirconocene-enyne template.
The ternary silicide La2Li2Si3 was synthesized from the elements in a sealed niobium tube. La2Li2Si3 was characterized by powder and single crystal X-ray diffraction: Ce2Li2Ge3 type, Cmcm, a 1⁄4 450.03(8), b 1⁄4 1880.3(4), c 1⁄4 689.6(1) pm, wR2 1⁄4 0.0178, 597 F2 values, and 26 parameters. The La2Li2Si3 structure contains two crystallographically independent silicon sites, both in slightly dis...
متن کاملCationic alkylaluminum-complexed zirconocene hydrides: NMR-spectroscopic identification, crystallographic structure determination, and interconversion with other zirconocene cations.
The ansa-zirconocene complex rac-Me(2)Si(1-indenyl)(2)ZrCl(2) ((SBI)ZrCl(2)) reacts with diisobutylaluminum hydride and trityl tetrakis(perfluorophenyl)borate in hydrocarbon solutions to give the cation [(SBI)Zr(μ-H)(3)(Al(i)Bu(2))(2)](+), the identity of which is derived from NMR data and supported by a crystallographic structure determination. Analogous reactions proceed with many other zirco...
متن کاملHomogeneous and heterogeneous oligomerization reactions of olefins with unbridged metallocene catalysts
1-Pentene, respectively 1-hexene, were reacted with 13 homogeneous metallocene catalysts to give linear oligomerization products, predominantly dimers, with selectivities above 90%. The product distributions of the codimerization reactions of 1-pentene with 1-hexene reflected a binomial behaviour. Therefore, the ratio for dimers is 1:2:1 (C10:C11:C12) while the trimers (pentadecenes up to octad...
متن کاملKinetic resolution of racemic -olefins with ansa-zirconocene polymerization catalysts: Enantiomorphic site vs. chain end control
Copolymerization of racemic -olefins with ethylene and propylene was carried out in the presence of enantiopure C1-symmetric ansa metallocene, {1,2-(SiMe2)2( -C5H-3,5-(CHMe2)2)( -C5H3)}ZrCl2 to probe the effect of the polymer chain end on enantioselection for the Ror S-olefin during the kinetic resolution by polymerization catalysis. Copolymerizations with ethylene revealed that the polymer cha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1993
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.47-0425