Continuously operable method for producing carbonyl compounds by means of a catalyst containing a nitroxyl radical

US8981159B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Florian Klasovsky · Haltern am See, DE
• Thomas Haas · Munster, DE
• Thomas Tacke · Friedrichsdorf, DE
• Jan Christoph Pfeffer · Hanau, DE
• Michael Rimbach · Herne, DE
• Michael Volland · Karlsfeld, DE
• Michiel Janssen · The Hague, NL
• Roger Sheldon · Rijswijk, NL
• Juergen Haberland · Haltern am See, DE

Key dates

• Filing date: Dec 6, 2011
• Grant date: Mar 17, 2015
• Expiry date: Dec 6, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D493/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for the oxidation of a primary or secondary alcohol, preferably to form an aldehyde or ketone, comprising the following steps: a) providing a catalyst composition comprising at least one compound containing a nitroxyl radical, at least one NO source, at least one carbon or mineral acid or an anhydride of a carbon or mineral acid; b) producing a reaction mixture by adding at least one primary or secondary alcohol and a gas comprising oxygen and optionally one or more than one solvent to the catalyst composition from step a) or step e); c) incubating the reaction mixture from step b) at a temperature of between 0 and 100° C. or at the boiling point of the solvent; d) simultaneously with or subsequent to step c): crystallizing the reaction product; and e) recovering the catalyst composition by removing the crystallized reaction product from the reaction mixture obtained in step d).