[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[NH:10][N:11]1[CH:15]=[CH:14][CH:13]=[CH:12]1)([O-:3])=[O:2].[Cl:16][C:17]([Cl:21])([Cl:20])[C:18]#N.Cl.[OH2:23]>CCOCC>[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[NH:10][N:11]1[CH:15]=[CH:14][CH:13]=[C:12]1[C:18](=[O:23])[C:17]([Cl:21])([Cl:20])[Cl:16])([O-:3])=[O:2]A cooled solution of 40.5 g 1-(2-nitrophenylamino)-pyrrole (prepared as described in Example 1b) and 43 g trichloroacetonitrile in 650 ml of absolute ether is saturated with gaseous hydrogen chloride. The mixture isstirred with cooling for 24 hours. Water is added carefully and then ether.The ether phase is washed with brine, dried and concentrated to give the heading compound, m.p. 145°-148° (recrystallised from ether/petroleum ether).
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