[Cl:1][C:2]1[N:7]=[C:6]([N:8]2[CH2:17][CH2:16][C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[CH2:9]2)[C:5]([N+:18]([O-])=O)=[CH:4][CH:3]=1.[C:21]([Mg]Br)([CH3:23])=[CH2:22]>>[Cl:1][C:2]1[CH:3]=[C:4]2[CH:22]=[C:21]([CH3:23])[NH:18][C:5]2=[C:6]([N:8]2[CH2:17][CH2:16][C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[CH2:9]2)[N:7]=1In accordance with the same procedures as in Step 3 of Example 642, except for using 2-(6-chloro-3-nitropyridin-2-yl)-1,2,3,4-tetrahydroisoquinoline prepared in Preparation 7 and isopropenylmagnesium bromide, the titled compound was obtained as yellow oil. (Yield: 35%) The product was used in the subsequent step without further purification.
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