Method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid

US8975440B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Alexander May · Seeheim-Jugenheim, DE
• Martin Koestner · Darmstadt, DE
• Joerg Becker · Bad Aibling, DE
• Joerg Schallenberg · Dorsten, DE
• Hermann Siegert · Weiterstadt, DE
• Bernd Vogel · Wiesbaden, DE

Key dates

• Filing date: Oct 29, 2009
• Grant date: Mar 10, 2015
• Expiry date: Jun 7, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C253/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid, comprising the steps of A) reacting a carbonyl compound with hydrocyanic acid to produce a hydroxycarboxylic acid nitrile, B) hydrolysis of the hydroxycarboxylic acid nitrile obtained in step A) in the presence of a catalyst comprising manganese dioxide, wherein a molar excess of carbonyl compound is used in relation to the hydrocyanic acid to react the carbonyl compound with hydrocyanic acid according to step A), and the reaction mixture obtained in step A) is not purified by distillation before the hydrolysis according to step B) is carried out. The invention furthermore relates to a method for producing alkyl(meth)acrylates from polymers, moulding compounds and moulded bodies, wherein a method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid is carried out in accordance with the method described above.