1: bis-(benzothiazol-2-yl)-disulphide With triphenylphosphine in toluene T=25°C; 0.333333 h; 2: 4-((4-methylpiperazin-1-yl)methyl)benzoic acid in toluene T=25°C; 3: C17H16N4 in toluene T=50°C;

in toluene T=25 - 50°C;