Process for preparing certain substituted caprolactams
US6545148B2 · kind B2 · utility
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2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2002 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Mar 11, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D223/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to an improved process for preparing certain substituted caprolactam compounds which comprises acylating an aminocaprolactam compound with a lactone compound in the presence of a weak base and a polar, organic solvent, and hydrolyzing the resultant diamide compound in a mixture of solvents to obtain the desired caprolactam compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.