Selective conversion of aliphatic and aromatic aminonitriles and/or dinitriles into lactams
US4625023A · kind A · utility
12Cited by
1References
48Claims
0Family size
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Key dates
| Filing date | Sep 3, 1985 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Sep 3, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D201/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the selective conversion of dinitriles into the corresponding lactam by treating the dinitrile with an effective amount of a hydrogenation catalyst such as copper chromite in combination with a co-catalyst, such as titania, at a temperature in the range of from about 200.degree. C. to about 400.degree. C. and at a pressure of at least 50 kPa in the presence of water and hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.