发明申请
US20080146839A1 Method for Producing 5-Halo-2,4,6-Trifluoroisophthalic Acid
审中-公开
5-卤代-2,4,6-三氟间苯二甲酸的制备方法
- 专利标题： Method for Producing 5-Halo-2,4,6-Trifluoroisophthalic Acid
- 专利标题（中）： 5-卤代-2,4,6-三氟间苯二甲酸的制备方法
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申请号： US11908870申请日： 2006-03-16
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公开(公告)号： US20080146839A1公开(公告)日： 2008-06-19
- 发明人: Michael Rack , Sebastian Peer Smidt , Manuel Budich , Volker Maywald , Michael Keil , Bernd Wolf
- 申请人： Michael Rack , Sebastian Peer Smidt , Manuel Budich , Volker Maywald , Michael Keil , Bernd Wolf
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DE Ludwigshafen
- 优先权： DE102005013038.0 20050318
- 国际申请： PCT/EP2006/060793 WO 20060316
- 主分类号： C07C63/70
- IPC分类号： C07C63/70 ; C07C25/13
摘要：
The invention relates to a method for producing 5-halo-2,4,6-tifluoroisophthalic acid of formula (I), wherein X represents F, Cl, Br, or I, by hydrolysis of 5-halo-2,4,6-trifluoroisophthalodinitrile of formula (II). Said invention is characterised in that in a first step, isophthalodinitrile (II) or a solution containing isophthalodinitrile (II) is reacted with a concentrated sulphuric acid at room temperature in order to form a 5-halo-2,4,6-trifluoroisophthalodiamide of general formula (III), and is, subsequently, heated and in a second step, isophthalic acid (I) is produced after additional heating and addition of water.
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