[C:1]([NH:9][C:10](=[CH:15][N:16]([CH3:18])C)[C:11]([O:13][CH3:14])=[O:12])(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N[C:20]1[CH:25]=[CH:24]C=[CH:22][CH:21]=1.Cl.O>C(O)(C)C>[C:1]([NH:9][C:10](=[CH:15][NH:16][C:18]1[CH:24]=[CH:25][CH:20]=[CH:21][CH:22]=1)[C:11]([O:13][CH3:14])=[O:12])(=[O:8])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=110g (39.5 mmol) of methyl 2-benzoylamino-3-dimethylaminoacrylate and 11.1 g (118 mmol) of aniline were dissolved at 40° C. in 200 ml of isopropanol. The solution was admixed with 3.6 ml (43.5 mmol) of concentrated hydrochloric acid within 5 minutes (min) and stirred for a further 10 min. 200 ml of deionized water were added, the suspension was cooled to 10° C. and the crystallized product was filtered off. Yield: 11.5 g (92% of theory) 1H NMR: 3.62 (s, 3H); 6.90-7.00 (m, 1H); 7.19 (d, 2H); 7.25-7.30 (m, 2H); 7.48-7.61 (m, 3H); 7.93 (d, 1H); 8.02 (d, 2H); 8.90 (d, 1H); 9.15 (s, 1H)
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