| 摘要 |
The invention relates to a process for preparing 2,4,5-trifluoro-benzonitrile of the formula (I)in which 2,4,5-trifluoro-aniline of the formula (II)is, in a first step A), reacted with a nitrosating agent in the presence of a diluent and in which, in a second step B), the reaction product obtained in step A) is reacted with an alkali metal cyanide in the presence of a transition metal compound, an acid acceptor and a diluent.
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