Br[C:2]1[N:3]=CN[C:6]=1[CH2:7]SCCN.CSC(SC)=C[N+]([O-])=O.[N+:21]([CH:24]=[C:25](SC)[NH:26][CH2:27][CH2:28][S:29][CH2:30][C:31]1[NH:35][CH:34]=[N:33][C:32]=1[Br:36])([O-:23])=[O:22].C(N)C#C>>[N+:21]([CH:24]=[C:25]([NH:3][CH2:2][C:6]#[CH:7])[NH:26][CH2:27][CH2:28][S:29][CH2:30][C:31]1[NH:35][CH:34]=[N:33][C:32]=1[Br:36])([O-:23])=[O:22]When 2-[(4-bromo-1H-imidazol-5-yl)methylthio]ethylamine (prepared according to the procedure described in Belgian Patent 779,775) is reacted with 1,1-bis(methylthio)-2-nitroethylene according to the procedure of Example 6, Step A, and the resultant 1-nitro-2-methylthio-2-{2-[(4-bromo-1H-imidazol-5-yl)methylthio]ethylamino}ethylene is treated with propargylamine by the procedure of Example 6, Step B, the title compound is produced.
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