Process for the catalytic hydrogenation of a nitrile

US7291754B2 · kind B2 · utility

Assignee

• DSM IP ASSETS B.V. · NL

Inventors

• Franciscus H. A. M. J. Vandenbooren · Eijsden, NL
• Hubertus J. M. Bosman · Sittard, NL
• Alexander Volker Peters · Aachen, DE
• Maria J. G. Van Den Boer · Houthalen-Helchteren, BE

Key dates

• Filing date: Jan 21, 2004
• Grant date: Nov 6, 2007
• Expiry date: Sep 14, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the catalytic hydrogenation of a nitrite in the presence of an amine and a catalyst wherein the catalyst is a liquid-rinsed Raney-type catalyst contacted with a hydroxide prior to contacting the catalyst with the amine. The process results in higher selectivity in the formation of diamines from diniriles.