[CH3:1][C:2]1[NH:3][CH:4]=[CH:5][N:6]=1.[H-].[Na+].Cl[CH2:10][C:11]1[CH:12]=[N:13][N:14]([C:16]2[CH:21]=[CH:20][C:19]([Cl:22])=[C:18]([Cl:23])[CH:17]=2)[CH:15]=1>>[Cl:23][C:18]1[CH:17]=[C:16]([N:14]2[CH:15]=[C:11]([CH2:10][N:3]3[CH:4]=[CH:5][N:6]=[C:2]3[CH3:1])[CH:12]=[N:13]2)[CH:21]=[CH:20][C:19]=1[Cl:22]2-Methylimidazole was deprotonated with sodium hydride and then treated with 4-chloromethyl-1-(3,4-dichloro-phenyl)-1H-pyrazole. Extractive and chromatographic workup gave the title compound as a white crystalline solid. Mp. 176-177° C. (AcOEt), MS: m/e=307 (M+H+).
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