发明授权
US5808132A .alpha.,.alpha.-bis(trifluoromethyl)arylacetic acid ester; its
intermediates for synthesis; and process for producing the same
失效
α，α-双（三氟甲基）芳基乙酸酯; 其中间体用于合成; 及其制造方法
- 专利标题： .alpha.,.alpha.-bis(trifluoromethyl)arylacetic acid ester; its intermediates for synthesis; and process for producing the same
- 专利标题（中）： α，α-双（三氟甲基）芳基乙酸酯; 其中间体用于合成; 及其制造方法
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申请号： US614224申请日： 1996-03-12
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公开(公告)号： US5808132A公开(公告)日： 1998-09-15
- 发明人: Takehiro Sonoi , Toshimasa Sagawa , Futoshi Masaki , Toshio Kubota
- 申请人： Takehiro Sonoi , Toshimasa Sagawa , Futoshi Masaki , Toshio Kubota
- 申请人地址： JPX Tokyo
- 专利权人： Nippon Mektron, Limited
- 当前专利权人： Nippon Mektron, Limited
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX7-166965 19950608; JPX7-166966 19950608
- 主分类号： C07C67/00
- IPC分类号： C07C67/00 ; C07D303/48 ; C07C69/76 ; C07D303/02
摘要：
Heptafluoroisobutenyl methyl ether having the following formula: ##STR1## is oxidized with ozone to produce perfluoro(2-methyl-1,2-epoxy-propyl) methyl ether. The resulting intermediate compound is allowed to react with an aromatic compound ArH to produce .alpha.,.alpha.-bis(trifluoromethyl)arylacetic acid methyl ester having the following formula: ##STR2## By hydrolysis, decarboxylation and further hydrolysis of the ester compound, .alpha.,.alpha.-bis(trifluoromethyl)arylacetic acid for use as raw materials for medicines, agricultural chemicals, liquid crystals, etc. or reagents for determining an optical purity can be obtained.
公开/授权文献
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