[1,2,5]Thiadiazolo[3,4-c]pyridine, 4,7-dibroMo-

4,7-Dibromo-[1,2,5]thiadiazolo[3,4-c]pyridine can be used in the synthesis of panchromatic organic for dye sensitized solar cells (DSSCs).

4,7-Dibromo-[1,2,5]thiadiazolo[3,4-c]pyridine is a thiadiazolo[3,4-c]pyridine based material that is used as an electron deficient group for organic electronic applications.

Under the protection of nitrogen, 2,5-dibromo-3,4-diaminopyridine (2.67 g, 10 mmol) was dissolved in 30 mL of pyridine, cooled down to 0 , sulfoxide chloride (1.79 g, 15 mmol) was added, and naturally raised to room temperature and stirred for 12 hours. The product was extracted with dichloromethane, and after spin-drying the solvent of the organic layer under reduced pressure, the crude product was purified by column chromatography using petroleum ether: ethyl acetate = 4:1 (v/v) as eluent to give a white solid product, 4, 7-dibromo-[1, 2, 5] thiadiazolo[3, 4-C] pyridine.