发明公开
EP0809638A2 VERFAHREN ZUR HERSTELLUNG VON AMMONIUM-SALZEN VON 3-ISOPROPYL-2,1,3-BENZOTHIADIAZIN-4-ON-2,2-DIOXID
失效
用于生产铵盐3-异丙基-2,1,3-苯并噻二嗪-4-酮-2,2-二氧化物
- 专利标题: VERFAHREN ZUR HERSTELLUNG VON AMMONIUM-SALZEN VON 3-ISOPROPYL-2,1,3-BENZOTHIADIAZIN-4-ON-2,2-DIOXID
- 专利标题(英): Process for producing ammonium salts of 3-isopropyl-2,1,3-benzothiadiazine-4-on-2,2-dioxide
- 专利标题(中): 用于生产铵盐3-异丙基-2,1,3-苯并噻二嗪-4-酮-2,2-二氧化物
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申请号: EP96902969.0申请日: 1996-02-01
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公开(公告)号: EP0809638A2公开(公告)日: 1997-12-03
- 发明人: MERKLE, Hans, Rupert , DUREIN, Alfons , HANSEN, Hanspeter , JÄGER, Karl-Friedrich
- 申请人: BASF AKTIENGESELLSCHAFT
- 申请人地址: 67056 Ludwigshafen DE
- 专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人地址: 67056 Ludwigshafen DE
- 优先权: DE19951005036 19950215
- 国际公布: WO1996025407 19960822
- 主分类号: A01N43
- IPC分类号: A01N43 ; C07D285
摘要:
A process for producing salts of 3-isopropyl-2,1,3-benzothiadiazine-4-on-2,2-dioxide of general formula (I) (R1-R4 = H, lower alkyl, lower hydroxyalkyl) by reacting bentazone (IIa) in an organic solvent with an amine (IIIa), reacting bentazone (IIa) in an organic solvent virtually immiscible with water with an amine (IIIa) or an ammonium salt (IIIb) and taking salt (I) up in water or reacting bentazone (IIa) with an ammonium salt (IIIb) or sodium bentazone (IIb) with an ammonium salt (IIIc) in water.
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