Process for the preparation of bridged, chiral metallocene catal

Details Process for the preparation of bridged, chiral metallocene catal Process for the preparation of bridged, chiral metallocene catal

1994-11-15

1997-04-01

Nazario-Gonzales, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

550 12, 550 28, 550 43, 550 53, 502117, C07F 1700, C07F 700, C07F 1100

Patent

active

056167474

ABSTRACT:
A process for the preparation of a compound of the formula III ##STR1## comprising, deprotonating a solution or suspension of an indene of the formula I ##STR2## in a solvent or solvent mixture containing a base to give a suspension of a metallated product of the compound of formula I,

REFERENCES:
patent: 4985576 (1991-01-01), Rohrmann et al.
patent: 5017714 (1991-05-01), Welborn, Jr.
patent: 5103030 (1992-04-01), Rohrmann et al.
patent: 5145819 (1992-09-01), Winter et al.
Sommer et al., "Silylindenes and Silylindans", J. Am. Chem. Soc. 73 (1951) 5135-5138.
Herrmann et al., "The First Example of an Ethylene-Selective Soluble Ziegler Catalyst of the Zirconocene Class", Angew. Chem. Int. Ed. Engl. 28 (1989) No. 11, 1511-1512.
Collins et al., "X-Ray structures of ethylenebis(tetra-hydroindenyl)-titanium and --zirconium dichlorides: a revision", J. Organometallic Chem., 342 (1988) 21-29.

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