Process for preparing 1,1,3-trioxo-1,2-benzothiazole-6-carboxamide
US10633352B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Dec 28, 2016 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Dec 28, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D275/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing, 1,1,3-Trioxo-1,2-benzothiazole-6-carboxamide of formula (I) comprising: reacting 2-chloro-sulfonyl-terephthalic acid dialkyl ester of formula (II) with ammonia (N H3) or ammonium containing-salt; wherein R represents a branched or non-branched C1-C12 alkyl.
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