Preparation of N-benzylamines

US6476268B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Harald Winsel · Birkenheide, DE
• Wolfgang Siegel · Schifferstadt, DE
• Michael Bartsch · Neustadt, DE

Key dates

• Filing date: Mar 27, 2002
• Grant date: Nov 5, 2002
• Expiry date: Mar 27, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C249/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

N-Benzylamines are prepared by a process in which(i) in a first step, a benzaldehyde is reacted with a primary amine to give the imine and(ii) in a second step, the imine is hydrogenated with hydrogen in the presence of a catalyst containing one or more metals of groups 8 to 10 of the Periodic Table of the Elements to give the N-benzylamine,wherein the iminization (i) is carried out in a water-miscible solvent and the resulting water of reaction is not removed, and the hydrogenation (ii) is carried out in the imine solution obtained in the iminization (i) and containing water of reaction.