Process for the catalytic hydrogenation of nitriles to amines in the presence of a catalyst of doped raney nickel type
US5777166A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Nov 25, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the field of the catalytic reduction of nitriles to amines by use of Raney catalysts doped with one or a number of additional metal elements chosen from the elements of group IVb of the periodic classification. More precisely, it relates to a process for the hydrogenation of nitriles to amines, characterized in that it essentially consists: PA1 in selecting a liquid reaction medium which dissolves the nitrile substrate to be hydrogenated, PA1 in using at least one inorganic alkali metal or alkaline-earth metal hydroxide base, PA1 and in adopting a catalyst whose doping element/Ni ratio by weight is between 0.05 and 10%. More specific application to the hydrogenation of dinitriles to diamines or to aminonitriles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.