Process for the preparation of substituted aromatic amino compounds
US5877340A · kind A · utility
2Cited by
1References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Oct 1, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C253/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to processes for preparing substituted aromatic amino compounds which contain at least one unsaturated --CN bond or carbonyl group on the aromatic radical or in a side chain, by catalytic hydrogenation of appropriate substituted aromatic nitro compounds in the presence of a modified noble metal catalyst of platinum which is modified with a metal selected from lead, mercury, bismuth, germanium, cadmium, arsenic, antimony, silver and gold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.