Method for producing cis-rose oxide

US8546591B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Lucia Koenigsmann · Stuttgart, DE
• Juergen Schubert · Dirmstein, DE
• Andreas Walch · Heidelberg, DE
• Guenther Gottwald · Mannheim, DE
• Martin Kamasz · Ludwigshafen am Rhein, DE
• Ekkehard Schwab · Neustadt, DE
• Klaus-Peter Pfaff · Friedelsheim, DE
• Michael Slany · Tauberbischofsheim, DE

Key dates

• Filing date: Dec 17, 2008
• Grant date: Oct 1, 2013
• Expiry date: Jun 16, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D309/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.