发明名称 |
PROCESS FOR PREPARING 1,2-BENZISOTHIAZOLIN-3-ONES |
摘要 |
Sodium sulfide hydrate is at least partially dehydrated by heating with N-methyl 2-pyrrolidone. 2-Chlorobenzamide is added to the mixture which is heated further. The mixture is cooled and treated with aqueous hydrogen peroxide to give the sodium salt of 1,2-benzisothiazolin-3-one in good yield. Acidification if desired gives rise to the free 1,2-benzisothiazolin-3-one. |
申请公布号 |
EP2989083(A1) |
申请公布日期 |
2016.03.02 |
申请号 |
EP20140716858 |
申请日期 |
2014.04.14 |
申请人 |
TITAN CHEMICALS LIMITED |
发明人 |
BERG, CARSTEN;SINGH, SANGITA;MARSH, IAN ROGER |
分类号 |
C07D275/04 |
主分类号 |
C07D275/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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