[Cl:1][C:2]1[CH:3]=[N:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[C:7]([Cl:12])[C:6]=2[CH2:13]Cl.[CH:15]([NH2:17])=[O:16]>O>[Cl:1][C:2]1[CH:3]=[N:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[C:7]([Cl:12])[C:6]=2[CH2:13][NH:17][CH:15]=[O:16]24.6 parts of 3,7-dichloro-8-chloromethylquinoline (Example 1) in 300 parts of formamide were refluxed for 5 hours. Water was added and the solid was filtered off with suction and recrystallized from methanol. 23 parts of 3,7-dichloro-8-formylaminomethylquinoline of melting point 110° C. were obtained. The yield corresponds to 94% of theory.
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