Selective hydrogenation of dinitrile to omega-aminonitrile and supported rhodium-containing catalyst therefor
US4389348A · kind A · utility
25Cited by
6References
10Claims
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Key dates
| Filing date | Oct 26, 1981 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Oct 26, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A dinitrile is hydrogenated to an omega-aminonitrile with hydrogen in an aprotic solvent with a supported rhodium catalyst and ammonia present. The catalyst is prepared by hydrolyzing a rhodium (III) halide with strong aqueous base at elevated temperatures, drying the supported rhodium hydroxide at elevated temperatures and hydrogenating the dried product at elevated temperatures. High conversions, selectivity to aminonitrile and catalyst recyclability are achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.