发明名称 |
Process for the preparation of trifluoromethyl-substituted biphenylcarboxylic acids and novel trichloromethyl-and trifluoromethyl-substituted biphenylcarbonitriles |
摘要 |
Trifluoromethyl-substituted biphenylcarboxylic acids are prepared by converting methyl-substituted biphenylcarbonitriles into the corresponding trichloromethyl-substituted biphenylcarbonitriles, converting the trichloromethyl group thereof to a trifluoromethyl group and thus obtaining trifluoromethyl-substituted biphenylcarbonitriles, and preparing the corresponding carboxylic acids therefrom by hydrolysis. A number of intermediates arising during this are novel compounds.
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申请公布号 |
US6580002(B2) |
申请公布日期 |
2003.06.17 |
申请号 |
US20020216579 |
申请日期 |
2002.08.09 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
MUELLER PETER;MARHOLD ALBRECHT;PEILSTOECKER KAREN |
分类号 |
C07C51/08;C07C51/363;C07C63/70;C07C63/72;C07C255/50;(IPC1-7):C07C63/333;C07C255/00 |
主分类号 |
C07C51/08 |
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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