Process for the preparation of lactames through oxime isomerization
US4211700A · kind A · utility
4Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1979 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | Feb 15, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D201/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of lactames according to the so-called "Beckmann rearrangement" which consists in isomerizing oximes in a sulfuric solution, the weight ratio percentage of sulfuric acid to the combined amount of sulfuric acid and water being raised to a value above that of the sulfuric solution feed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.