Process for the oxidation of alcohols to aldehydes and ketones in the presence of nitroxyl compounds as catalysts

US6750371B2 · kind B2 · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Elke Fritz-Langhals · Ottobrunn, DE
• Juergen Stohrer · Pullach, DE
• Hermann Petersen · Burghausen, DE

Key dates

• Filing date: Oct 4, 2002
• Grant date: Jun 15, 2004
• Expiry date: Oct 4, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1892
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An alcohol is oxidized to an aldehyde or a ketone in the presence of a nitroxyl compound as catalyst, wherein the alcohol to be oxidized is contained in an organic liquid phase, and is reacted in the presence of a nitroxyl compound with an aqueous phase comprising an oxidant. The reaction is carried out continuously at a contact time of the phases of from 0.1 s to a maximum of 15 minutes, with intensive mixing of the phases. The process produces high yields with low quantities of other oxidation byproducts.