Process for the producing of pentenenitriles
US5834616A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1997 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Sep 15, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C253/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of pentenenitriles. In this process the 3- or 4-pentenenitriles are produced by reacting 2-methylglutarimide, ethylsuccinimide, and/or their precursors, such as 4-cyanovalerimide, 2-methyl-4-cyanobutyrimide, 4-cyanovaleric acid, 2-methyl-4-cyanobutyric acid, 3-cyanovalerimide, 2-ethyl-3-cyanopropionimide, 3-cyanovaleic acid, and 2-ethyl-3-cyanopropionic acid, in the vapor phase at temperatures of 200.degree. to 600.degree. C. in the presence of an acidic solid catalyst, such as acidic molecular sieves, acidic clays, bridged or pillared clays, bulk oxides, and acidic phosphates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.