[NH2:1][C:2]1[N:3]([N:19]=CC2C=CC=CC=2)[CH:4]=[C:5]([C:7]2[CH:12]=[CH:11][C:10]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)=[CH:9][CH:8]=2)[N:6]=1.O.NN.C(#N)C>C(O)COCCO>[NH2:19][N:3]1[CH:4]=[C:5]([C:7]2[CH:8]=[CH:9][C:10]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)=[CH:11][CH:12]=2)[N:6]=[C:2]1[NH2:1]A solution of 9.2 g (0.0189 mol) of 2-amino-1-benzylideneamino-4-(4-biphenylyl)-imidazole and 22 ml of hydrazine hydrate in 73 ml of diethylene glycol is stirred at 140° C. for 48 hours. After cooling to 20° C., 100 ml of acetonitrile are added to the reaction mixture, which is then cooled further to 5° C. The product that has separated out is filtered off and washed with acetonitrile and diethyl ether. In that manner there is obtained the title compound having a water content of 0.41 %, m.p. >280° C., 1H-NMR (DMSO): δ=7.29-7.73 (m, 9H); 7.12 (s, 1H); 5.55 (s, 2H); 5.39 (s, 2H).
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