Process for the hydrogenation of halogenonitro-aromatic compounds in the presence of a sulfur-containing compound
US5126485A · kind A · utility
2Cited by
4References
29Claims
0Family size
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Key dates
| Filing date | Jul 20, 1990 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Jul 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the hydrogenation of halogenonitro-aromatic compounds wherein said compounds are contacted with a nickel-, cobalt- or iron-based catalyst, preferably Raney nickel, and hydrogen in the presence of a sulfur-containing compound. Preferably, the sulfur-containing compound is a sulfoxide or sulfone, and the molar ratio of the sulfur-containing compound to the catalyst ranges from about 1:1 to 10:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.