Preparation of aliphatic, alpha omega-aminonitriles

US5756808A · kind A · utility

Assignee

• BASF SE

Inventors

• Klemens Flick · Herxheim, DE
• Johann-Peter Melder · Schifferstadt, DE
• Werner Schnurr · Herxheim, DE
• Klaus Ebel · Lampertheim, DE
• Tom Witzel · Ludwigshafen, DE
• Wolfgang Harder · Weinheim, DE
• Alwin Rehfinger · Mutterstadt, DE
• Rolf Fischer · Heidelberg, DE

Key dates

• Filing date: May 16, 1996
• Grant date: May 26, 1998
• Expiry date: May 16, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C253/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process in which the catalyst PA1 (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and PA1 (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and PA1 (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal, with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or ruth…