发明授权
- 专利标题: Preparation of 1,2-benzisothiazolones
- 专利标题(中): 1,2-苯并异噻唑啉酮的制备
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申请号: US815918申请日: 1986-01-02
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公开(公告)号: US4736040A公开(公告)日: 1988-04-05
- 发明人: Peter Tonne , Hagen Jaedicke
- 申请人: Peter Tonne , Hagen Jaedicke
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3500577 19850110
- 主分类号: C07D275/04
- IPC分类号: C07D275/04
摘要:
1,2-Benzisothiazolones and their alkali metal salts are prepared by reacting 2,2'-dithiodibenzamides in the presence of oxygen or oxygen donors in an aqueous alkaline medium to which a water-soluble organic solvent may be added and, if desired, freeing the benzisothiazolones from the alkali metal salts with acid.
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