[Br:1][C:2]1[CH:8]=[CH:7][C:5]([NH2:6])=[CH:4][CH:3]=1.[Cl:9][C:10]1[CH:18]=[C:17]([Cl:19])[CH:16]=[CH:15][C:11]=1[C:12]([Cl:14])=O.C(N(CC)CC)C>ClCCl>[Br:1][C:2]1[CH:8]=[CH:7][C:5]([N:6]=[C:12]([Cl:14])[C:11]2[CH:15]=[CH:16][C:17]([Cl:19])=[CH:18][C:10]=2[Cl:9])=[CH:4][CH:3]=1To a solution of 4-bromoaniline (40 mg, 0.12 mmol) and 2,4-dichloro benzoyl chloride (69 μL, 0.12 mmol) in dichloromethane is added triethylamine (20 μL, 0.144 mmol). After stirred at room temperature for 30 min, the solvent is removed. The residue is added 0.5 mL of thionyl chloride. The reaction mixture is heated at 80° C. for 1h, concentrated. The product is used in the next step reaction.
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