Process for preparing cycloalkadienes

US6916966B2 · kind B2 · utility

Assignee

• Symrise GmbH & Co. KG · DE

Inventors

• Ingo Wöhrle · Holzminden, DE
• Peter Esser · Recklinghausen, DE
• Aurelia Reckziegel · Holzminden, DE
• Matthias Brandt · Wuppertal, DE
• Stephan Klein · Mettmann, DE
• Thomas Turek · Boston, US

Key dates

• Filing date: Aug 23, 2002
• Grant date: Jul 12, 2005
• Expiry date: Jul 27, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/18
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing cycloalkadienes using supported catalysts based on Re2O7/γ-Al2O3 and also to the use of the resulting cycloalkadienes for the preparation of fragrances.