Process for preparing a carbon-bridged biscyclopentadiene compound

US5670681A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Frank Kuber · Oberursel, DE
• Michael Riedel · Essen, DE

Key dates

• Filing date: Jun 28, 1996
• Grant date: Sep 23, 1997
• Expiry date: Jun 28, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing a carbon-bridged biscyclopentadiene compound by reacting one or two cyclopentadiene compounds LH with a carbonyl compound in the presence of at least one base and at least one phase transfer catalyst.