Process for the production of primary and/or secondary amines from oxo compounds

US5852217A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Thomas Haas · Munster, DE
• Dietrich Arntz · Oberursel, DE
• Karl-Ludwig Weber · Dieburg, DE
• Willi Hofen · Rodenbach, DE
• Stefan Wieland · Offenbach, DE

Key dates

• Filing date: Jul 7, 1997
• Grant date: Dec 22, 1998
• Expiry date: Jul 7, 2017

Classification

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

Abstract

This invention relates to a process for the production of primary and/or secondary amines from oxo compounds by catalytic imination of the oxo compound with ammonia or a primary amine and subsequent hydrogenation. Imination proceeds according to the invention in the presence of a novel imination catalyst, namely an organopolysiloxane containing sulphonate groups. This imination catalyst is distinguished by elevated activity. The process is in particular suitable for the production of isophorone diamine from isophorone nitrile, wherein it has proved possible to reduce the content of secondary products and to increase yield.