Process for converting the achiral meso form of an ansa-metallocene complex into the chiral racemic form

US5912373A · kind A · utility

Assignee

• BASF SE

Inventors

• David Fischer · Breunigweiler, DE
• Franz Langhauser · Bad Dürkheim, DE
• Jurgen Kerth · Eisenberg (Pfalz), DE
• Gunther Schweier · Osthofen, DE
• Hans-Herbert Brintzinger · Frauenfeld, CH
• Katrin Schmidt · Konstanz, DE

Key dates

• Filing date: Dec 17, 1997
• Grant date: Jun 15, 1999
• Expiry date: Dec 17, 2017

Classification

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

Abstract

The conversion of the achiral meso form of an ansa-metallocene complex into the chiral rac form is carried out photochemically in the presence of a chiral auxiliary reagent.