Process for the preparation of a hydroxylamine
US5166435A · kind A · utility
9Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1988 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Mar 24, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C239/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of organic hydroxylamines as a result of the corresponding nitroderivative being hydrogenated in the presence of an inert solvent, a platinum catalyst, a nitrogen-containing base (in an amount of less than 10% by weight calculated on the amount of nitro derivative) and a tri- or pentavalent organic phosphorus compound. It has been found that if only use is made of the nitrogen-containing base or the phosphorus compound the yields of isolated hydroxyl amine are significantly reduced in comparison with those obtained with the present process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.