Process for producing piperazinesulfonamide derivatives and salts thereof
US6172228A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Dec 3, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for advantageously preparing a piperazinesulfonamide derivative represented by the general formula (III): ##STR1## wherein R.sup.1 is hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, hydroxyl group, trifluoromethyl group, nitro group or amino group; R.sup.2 is a phenyl group which may have as substituents on its phenyl ring 1 to 3 groups selected from the group consisting of an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, hydroxyl group, trifluoromethyl group, nitro group and amino group, 2-pyridyl group, 3-pyridyl group or 4-pyridyl group; each of R.sup.3 and R.sup.4 is independently hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, a hydroxyalkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 8 carbon atoms, or a phenyl group which may be substituted; and Y is an alkylene group having 1 to 12 carbon atoms, and a salt thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.