Process for the preparation of lactams from the corresponding cycloalkanone oximes
US6252065A · kind A · utility
1Cited by
3References
21Claims
0Family size
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Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D201/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
For the preparation of lactams comprising 6 to 12 carbon atoms from the corresponding cycloalkanone oximes by rearrangement according to the Beckmann reaction in the presence of acid, the process is characterized in that use is made of methanesulphonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.