发明名称 |
Method for isolating 3-[2-chloro-4-(trifluoromethyl)-phenoxy]-benzoic acid |
摘要 |
PCT No. PCT/EP98/00705 Sec. 371 Date Jul. 28, 1999 Sec. 102(e) Date Jul. 28, 1999 PCT Filed Feb. 9, 1998 PCT Pub. No. WO98/37054 PCT Pub. Date Aug. 27, 1998A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I from an aqueous solution of its metal salt comprises a) reacting the metal salt of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid with an organic or inorganic acid; b) heating the reaction mixture until a liquid two-phase system of organic and aqueous phase has formed; and c) separating the organic phase from the aqueous phase.
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申请公布号 |
US6066761(A) |
申请公布日期 |
2000.05.23 |
申请号 |
US19990355277 |
申请日期 |
1999.07.28 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
MERKLE, HANS RUPERT;EVA, RONALD R.;FRANKE, DIRK;JONES, SIMON A.;MATTMANN, WOLFGANG;MUNZINGER, MANFRED |
分类号 |
C07C51/48;C07C51/02;C07C65/03;C07C65/21;C07C65/24;(IPC1-7):C07C65/21 |
主分类号 |
C07C51/48 |
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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