Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine

US5840981A · kind A · utility

Assignee

• BASF SE

Inventors

• Eberhard Fuchs · Bischofswerda, DE
• Horst Zimmermann · Mannheim, DE
• Tom Witzel · Ludwigshafen, DE
• Boris Breitscheidel · Fulda, DE
• Rainer Becker · Bad Dürkheim, DE
• Horst Nauhauser · Dudenhofen, DE

Key dates

• Filing date: Oct 28, 1997
• Grant date: Nov 24, 1998
• Expiry date: Oct 28, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J23/40
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing N-methyl-2-(3,4-dimethoxyphenyl)-ethylamine comprises hydrogenating 3,4-dimethoxyphenylacetonitrile with a methylamine of the general formula I ##STR1## where R.sup.1 is hydrogen, benzyl or tert-butyl, and hydrogen in the presence of a supported catalyst which comprises from 0.05 to 50% by weight of copper chromite, copper, silver, gold, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum or mixtures thereof, in the presence or absence of water at from 20.degree. to 200.degree. C. under from 1 to 300 bar.