Process for producing aminopiperazine derivatives
US6355800B1 · kind B1 · utility
1Cited by
5References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 6, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D295/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A new industrial process excellent in yield and purity for preparing a compound of the formula: or a salt thereof in a less number of steps with a synthetic pathway without proceeding via nitroso compounds,wherein R1 is lower aryl, ar(lower)alkoxy or heterocyclic group, each of which may be substituted with halogen, andR2 is cyclo(lower)alkyl, aryl or ar(lower)alkyl, each of which may be substituted with halogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.