Catalytic process for isomerizing metallocenes

Details Catalytic process for isomerizing metallocenes Catalytic process for isomerizing metallocenes

1998-09-23

1999-10-12

Nazario-Gonzalez, Porfirio

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

Organic compounds

Heavy metal containing

502103, 502117, 526127, 526160, 526943, 534 15, 556 12, 556 43, 556 53, C07F 1700, C07F 700

Patent

active

059657596

ABSTRACT:
It has been discovered that the meso form of metallocenes can be catalytically isomerized to the racemic form of the metallocene. This is accomplished by heating an isomerization mixture formed from (i) a meso form of a bridged metallocene or a mixture of meso and racemic forms of a bridged metallocene, (ii) a Group 1 and/or 2 metal halide isomerization catalyst, and (iii) a liquid organic isomerization medium, such that at least a portion of the meso form of the metallocene is isomerized to the racemic form.

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