Process for producing oxycarbonyl-substituted piperazine derivative
US7569690B2 · kind B2 · utility
0Cited by
0References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Nov 28, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D295/205
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
If an organic solvent with a water content of 15% or less is used when an oxycarbonyl-substituted piperazine derivative is produced from a piperazine derivative, the piperazine derivative can be oxycarbonylated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.