[CH2:1]([NH2:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N/C(/C#N)=[C:11](\[C:14](=[NH:18])OCC)/[C:12]#[N:13].Cl.[NH2:22][C:23]1C=CC=CC=1.[OH-].[Na+]>C(O)C>[NH2:18][C:14]1[N:8]([CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH:23]=[N:22][C:11]=1[C:12]#[N:13]Benzylamine (2.86 ml, 26.3 mmol) was added dropwise to a solution of ethyl [(Z)-2-amino-1,2-dicyanovinyl]imidoformate (4.1 g, 25.0 mmol) and aniline hydrochloride (50 mg) in ethanol (80 ml), stirring at 10° C. and the reaction mixture stirred at room temperature for 18 hours. The reaction mixture was added dropwise to 1M sodium hydroxide (50 ml), stirring at 10° C. and the resultant suspension stirred at room temperature for 18 hours. The solid was collected by filtration, washed with water and dried in vacuo. The title compound was obtained as an off white solid (3.6 g, 18.2 mmol, 73%).
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