[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([S:8][C:9]#[N:10])=[CH:4][C:3]=1[N+:11]([O-:13])=[O:12].[CH3:14][O:15][C:16]([N:18]=[C:19]=[S:20])=[O:17]>CC(C)=O>[CH3:14][O:15][C:16]([NH:18][C:19](=[S:20])[NH:1][C:2]1[CH:7]=[CH:6][C:5]([S:8][C:9]#[N:10])=[CH:4][C:3]=1[N+:11]([O-:13])=[O:12])=[O:17]2.0 G. of 1-amino-2-nitro-4-thiocyanatobenzene in 20 ml. acetone is treated with 3.0 g. methoxycarbonyl isothiocyanate at room temperature for 9 days. The solution is concentrated and the residue triturated with methanol and recrystallized from acetone, yielding 1-(3-methoxycarbonyl-2-thioureido)- 2-nitro-4-thiocyanatobenzene.
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