Cl[C:2]1[C:11]([N+:12]([O-:14])=[O:13])=[CH:10][C:9]2[C:4](=[C:5]([CH3:15])[CH:6]=[CH:7][CH:8]=2)[N:3]=1.[NH3:16]>>[NH2:16][C:2]1[C:11]([N+:12]([O-:14])=[O:13])=[CH:10][C:9]2[C:4](=[C:5]([CH3:15])[CH:6]=[CH:7][CH:8]=2)[N:3]=11.6 g of 2-chloro-8-methyl-3-nitroquinoline (compound C1) is dissolved in 70 ml of ethanolic ammonia solution and stirred at 130° C. for 18 h in an autocave. After cooling to room temperature, the reaction mixture is concentrated in vacuo and the residue recrystallized from ethyl acetate. 1.2 g of the title compound are obtained as red solid.
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