Enhanced synthesis of racemic metallocenes

US5883278A · kind A · utility

Assignee

• ALBEMARLE CORPORATION · US

Inventors

• Jamie R. Strickler · Baton Rouge, US
• John M. Power · Garland, US
• Ronny W. Lin · Sugar Land, US
• Troy E. DeSoto · Baton Rouge, US
• John F. Balhoff · Baton Rouge, US

Key dates

• Filing date: Jan 20, 1997
• Grant date: Mar 16, 1999
• Expiry date: Jan 20, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/943
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Chiral metallocenes are prepared by reacting a salt of an asymmetric bis(cyclopentadienyl) moiety containing ligand with a chelate diamine adduct of a transition, lanthanide, or actinide metal halide in an organic solvent medium so as to produce said chiral metallocene.