Process for the preparation of benzo [d] isoxazol-3-yl-methanesulfonic acid and the intermediates thereof
US7291742B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Dec 24, 2003 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Aug 4, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D261/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of benzo[d]isoxazol-3-yl-methanesulfonic acid of formula (I), or a salt thereof, and the intermediates thereof, useful as an intermediate in the preparation of zonisamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.