Synthesis and structure of ansa-metallocene complexes (M=ZrCl 2, TiCl 2, YCl, and LuCl) containing the bis(2-methyl-4,5,6,7-tetrahydroinden-yl)dimethylsilane ligand

The three step synthesis of 2-methyl-4,5,6,7-tetrahydro-1 H-indene from cyclohexyl methacrylate is described [(a) PPA cyclization; (b) LiAlH 4 reduction; (c) HCl dehydration]. This annelated trisubstituted cyclopentadiene was bridged selectively to form ethylene- or dimethylsilyl-bridged bis(2-methy...

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Bibliographic Details
Published in:Journal of organometallic chemistry 2000-06, Vol.604 (1), p.12-19
Main Authors: Halterman, Ronald L, Schumann, Herbert, Dübner, Frank
Format: Article
Language:English
Subjects:
ansa-Bis(tetrahydroindenyl)metal
Bis(tetrahydroindenyl)lutetium chloride
Bis(tetrahydroindenyl)yttrium chloride
Chiral metallocenes
Tetrahydroindenyl ligand
Titanocene dichloride
Zirconocene dichloride
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Summary:The three step synthesis of 2-methyl-4,5,6,7-tetrahydro-1 H-indene from cyclohexyl methacrylate is described [(a) PPA cyclization; (b) LiAlH 4 reduction; (c) HCl dehydration]. This annelated trisubstituted cyclopentadiene was bridged selectively to form ethylene- or dimethylsilyl-bridged bis(2-methyl-4,5,6,7-tetrahydro-1 H-inden-1-yl) ligands. Metal complexes (M=ZrCl 2, TiCl 2, YCl, and LuCl) of the bis(2-methyl-4,5,6,7-tetrahydroinden-1-yl)dimethylsilane ligand were formed as meso/ dl stereoisomeric mixtures in ratios from 1:1 to 2:1 dl: meso.
ISSN:0022-328X
1872-8561
DOI:10.1016/S0022-328X(00)00177-7