Amide-based compounds, production, recovery, purification and uses thereof
US7022844B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2002 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D201/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods are disclosed of producing and purifying at least one amide. In accordance with one of the methods disclosed herein, the at least one amide is produced by providing an organic liquid comprising at least one oxime, providing at least one catalyst, adding the at least one catalyst to the organic liquid to form a rearrangement mass, wherein the rearrangement mass comprises at least one amide, at least one impurity, and the at least one catalyst, and heating the rearrangement mass to a temperature of at least about 115° C. for a period of time in order to sulfonate, break down and/or reduce the concentration of some of the at least one impurity in the rearrangement mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.