Continuous method for producing substituted cyclohexylmethanols

US8598392B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Daniela Mirk · Speyer, DE
• Lucia Königsmann · Stuttgart, DE
• Jochem Henkelmann · Mannheim, DE

Key dates

• Filing date: Dec 10, 2009
• Grant date: Dec 3, 2013
• Expiry date: Jun 24, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a continuous process for preparing para-alkyl-substituted cyclohexylmethanols, especially 4-isopropylcyclohexylmethanol, by catalytically hydrogenating the corresponding aldehydes or ketones in the presence of hydrogen and in the presence of a catalyst which comprises, as an active metal, ruthenium applied to a support, the support comprising Al2O3 and/or SiO2, and the catalyst being used in the form of a fixed bed catalyst in a hydrogenation reactor or in a plurality of hydrogenation reactors connected in series.