反应详情

To a stirring solution of 4-[bis(2-hydroxyethyl)-amino]benzaldehyde (1.7 g, 8.1 mmol) and 1,1′-{disulfanediylbis[ethane-2,1-diylimino(2-oxoethane-2,1-diyl)]}bis(2,3-dimethyl-1H-benzimidazol-3-ium) chloride (1.2 g, 2 mmol) in 35 ml of ethanol, 0.5 ml of piperidine was added as a catalyst. The reaction mixture was heated to reflux for 7 h. After cooling, the resulting orange solids were collected by filtration and then washed with dichloromethane and methanol. The drying afforded 1.6 g of a orange solid. Analyses were in accordance with the expected structure.

1. temperatureThe reaction mixture was heated
2. temperatureto reflux for 7 h
3. temperatureAfter cooling
4. filtrationthe resulting orange solids were collected by filtration
5. washwashed with dichloromethane and methanol