COC(C1C=C(OC2C=CC(Cl)=CC=2[Cl:21])C=CC=1[N+]([O-])=O)=O.[C:23]([Cl:31])(=[O:30])[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>>[Cl:21][C:26]1[CH:25]=[C:24]([CH:29]=[CH:28][CH:27]=1)[C:23]([Cl:31])=[O:30]In the commercial process for producing herbicidal bifenox, i.e., methyl 2-nitro-5-(2'4'-dichlorophenoxy)-benzoate, preparation of a reaction precursor involves the chlorination of benzoyl chloride to obtain m-chlorobenzoyl chloride. This material is then reacted with methanol to produce the corresponding methyl chlorobenzoate.
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