1: 4-Dimethylamino-2-methylbenzaldehyde With sodium thiosulfate in ethanol; water Heating / reflux; 2: 2-amino-4-lt;5'-(4''-methylpiperazin-1''-yl)benzimidazol-2'-ylgt;aniline in ethanol; water 24 h; Heating / reflux;

molecular sieve in nitrobenzene; toluene T=98 - 100°C; 36 h;