[NH2:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([F:9])=[CH:4][C:3]=1[NH2:10].[Cl:11][C:12]1[C:13]([N:17]=[C:18]=[S:19])=[CH:14][S:15][CH:16]=1>C1COCC1>[NH2:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([F:9])=[CH:4][C:3]=1[NH:10][C:18]([NH:17][C:13]1[C:12]([Cl:11])=[CH:16][S:15][CH:14]=1)=[S:19]To 1,2-diamino-4,5-difluorobenzene (1.02 g) in THF abs. (15 ml) 4-chloro-3-thienylisothiocyanate (1.25 g, example 52c) dissolved in THF abs. (15 ml) was added. Following the analogous description in example 54a) the desired product was obtained (773 mg).
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