发明授权
US5795983A Preparation of ammonium salts of 3-isopropyl-2, 1,
3-benzothia-diazin-4-one 2,2-dioxide
失效
3-异丙基-2,3-苯并噻唑-4-酮2,2-二氧化铵的铵盐的制备
- 专利标题： Preparation of ammonium salts of 3-isopropyl-2, 1, 3-benzothia-diazin-4-one 2,2-dioxide
- 专利标题（中）： 3-异丙基-2,3-苯并噻唑-4-酮2,2-二氧化铵的铵盐的制备
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申请号： US894157申请日： 1997-08-15
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公开(公告)号： US5795983A公开(公告)日： 1998-08-18
- 发明人: Hans Rupert Merkle , Alfons Durein , Hanspeter Hansen , Karl-Friedrich Jager
- 申请人： Hans Rupert Merkle , Alfons Durein , Hanspeter Hansen , Karl-Friedrich Jager
- 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： DEX19505036.3 19950215
- 主分类号： A01N43/00
- IPC分类号： A01N43/00 ; C07D285/16
摘要：
A process for preparing salts of 3-isopropyl-2,1,3-benzothia-diazin-4-one 2,2-dioxide of the general formula I ##STR1## (R.sup.1 -R.sup.4 =H, lower alkyl, lower hydroxyalkyl) by reacting bentazone (IIa) with an amine IIIa in an organic solvent, by reacting bentazone (IIa) with an amine IIIa or an ammonium salt IIIb in a virtually water-immiscible organic solvent and taking up the salt I in water or by reacting bentazone (IIa) with an ammonium salt IIIb or bentazone-sodium (IIb) with an ammonium salt IIIc, in each case in water.
公开/授权文献
- USD347539S Storage rack 公开/授权日：1994-06-07